Which of the Following Is True of a Person's Capacity

Which of the following is true of a person's capacity to be a principal or agent?

A) To be an agent,a person must have the ability to make his won contracts,independent of the principal.
B) Any duty that a principal has the capacity to perform can be delegated to an authorized agent.
C) A principal must have the capacity to do the acts for which the agent has been retained.
D) To be an agent,a person must have the capacity to perform non-delegable obligations for the principal.