Assuming That Any Minor Who Is Involved Is Old Enough

Assuming that any minor who is involved is old enough to understand the terms of a agency relationship,which of the following is generally true?

A) A minor can act as an agent on behalf of another minor.
B) An adult can act as an agent on behalf of a minor.
C) A minor can act as an agent on behalf of an adult.
D) An adult can act as an agent on behalf of a minor if the minor waives his right to disaffirm.
E) The principal can disaffirm all contracts that involve a minor as either principal or agent.