All the following statements concerning the 2503(c) trust are correct EXCEPT:

A. Almost any type of property may be placed in the trust, including real estate.

B. The trustee may be given very broad, almost unlimited investment powers.

C. The trust income must be distributed at least annually.

D. The trust corpus must be available to the beneficiary at age 21, if he or she asks for the corpus.

Provide a detailed explanation. This is estate planning.