Which of the Following Is True Regarding an Assignee's Acceptance

Which of the following is true regarding an assignee's acceptance of assigned rights?

A) A creditor beneficiary must accept assignment of rights, but there is no requirement that a donee beneficiary do so.
B) A donee beneficiary must accept assignment of rights, but there is no requirement that a creditor beneficiary do so.
C) An assignee must agree to accept assigned rights, and there is a strict protocol for doing so.
D) An assignee may decline an assignment if he has not agreed to it and declines in a timely fashion after learning of it.
E) An assignee may only decline an assignment if a delegation of duties is also involved.