A patient asks the nurse, "I already have a living will. Why should I have a durable power of attorney for health care also?" The nurse should reply, "A durable power of attorney for health care:

A) gives your agent the authority to make decisions about your care if you are unable to during any illness."
B) can be given only to a relative, usually the next of kin, who has your best interests at heart."
C) authorizes your physician to make decisions about your care that are in your best interest."
D) can be used only if you have a terminal illness and become incapacitated."