As used in this chapter, an "abused child" includes any child who: (A) Is the victim of "sexual activity" as defined under Chapter 2907. of the Revised Code, where such activity would constitute an offense under that chapter, except that the court need not find that any person has been convicted of the offense in order to find that the child is an abused child; (B) Is the victim of disseminating, obtaining, or displaying "materials" or "performances" that are "harmful to juveniles" as defined under