Which of the Following Is Correct with Respect to the Ratification

Which of the following is correct with respect to the ratification of an agent's contracts?

A) A principal can ratify a contract where the agent has gone beyond both his actual and apparent authority.
B) A principal can only ratify an agreement entered into by an agent if his name has not been used.
C) When a contract entered into by an agent is ratified by a principal, it commences at the time the principal ratifies the contract.
D) The agent can set a time limit within which the ratification must take place.
E) A contract can only be ratified if the principal was not able to enter into the contract himself at the time of ratification.