PER CURIAM.

Phillip Joseph Secreto, Jr., appeals from two convictions and sentences for first-degree criminal sexual conduct, MCLA 750.520b(1)(c) and (f); MSA 28.788(2)(1)(c) and (f), and a conviction and sentence for unarmed robbery, MCLA 750.530; MSA 28.798.

There was no error in the trial court's voir dire of prospective jurors and the criminal sexual conduct statute was not unconstitutionally vague as applied to the facts of the case.

However, the case must be remanded for vacation of the first-degree criminal sexual conduct convictions and sentences, and a conviction for second-degree criminal sexual conduct entered and the appellant resentenced.

The appellant was convicted and sentenced twice, under different theories, for the one act of criminal sexual conduct with which he was charged. A defendant may only be convicted and sentenced once for a single act of criminal sexual conduct, People v Willie Johnson, 75 Mich. App. 221; 255 N.W.2d 207 (1977). Therefore, one conviction and sentence must be vacated.

Further, regardless of which count the appellant were to be convicted on, the conviction and sentence for first-degree criminal sexual conduct must be vacated and a conviction for second-degree sexual conduct entered and the appellant resentenced.

On Count I, brought under MCLA 750.520b(1)(c), the appellant requested an instruction on the necessarily lesser included offense of second-degree criminal sexual conduct (under MCLA 750.520[c]; MSA 28.788[3]). The request was denied, a reversible error under People v Ora Jones, 395 Mich. 379; 236 N.W.2d 461 (1975), People v Thompson, 76 Mich. App. 705; 257 N.W.2d 268 (1977).

On Count II, brought under MCLA 750.520b(1)(f), the appellant requested instructions on the necessarily included lesser offenses of second (under MCLA 750.520c [f]; MSA 28.788[3] [1] [f], third (under MCLA 750.520d [b]; MSA 28.788[4] [1] [b], and fourth (under MCLA 750.520e [a]; MSA 28.788[5] [1] [a]), degree criminal sexual conduct. The trial court granted the request to instruct on third-degree criminal sexual conduct, but denied the requests for instructions on second and fourth degree, reversible error under Ora Jones, supra, and Thompson, supra. The conviction must be vacated, but a conviction under second, rather than fourth, degree criminal sexual conduct should be entered, and the appellant sentenced accordingly.

Because the jury was given the choice between first and third-degree criminal sexual conduct, which under the theory of Count II differ in that first degree includes the causation of personal injury as a statutory element while third degree does not, the jury necessarily found that an injury resulted from the act. Second and fourth-degree criminal sexual conduct, under the theory charged in Count II, differ from each other in the same respect. Thus a conviction for second-degree criminal sexual conduct is warranted.

Under Count I there are no crimes corresponding to third and fourth-degree criminal sexual conduct and thus those offenses are not lesser included offenses, necessarily or otherwise, to the greater offense of first-degree criminal sexual conduct brought under MCLA 750.520b(1)(c).

However, if the prosecutor is of the opinion that justice would be better served by a new trial, the trial court should, upon notification by the prosecutor prior to resentencing, vacate the judgments of conviction and grant a new trial on the original charges, Thompson, supra.

The conviction and sentence for unarmed robbery is affirmed.

Reversed and remanded in part, affirmed in part.