(2) the amounts that the trustee transfers from principal to income under section 15 of this chapter and distributes to the spouse from principal under the terms of the trust are insufficient to provide the spouse with the beneficial enjoyment required to obtain the marital deduction; the spouse may require the trustee to make property productive of income, convert property within a reasonable time, or exercise the power conferred by section 15(a) of this chapter. The trustee may decide which action or combination of actions to take.