According to the Twenty-Fifth Amendment, If a President's Ability to Discharge

According to the Twenty-Fifth Amendment, if a president's ability to discharge his or her normal functions is in question and he or she cannot communicate, which of the following is true?

A) The Supreme Court is empowered to select a physician to certify whether or not the president is able to perform the duties of his or her office.
B) The Speaker of the House becomes acting president until the matter is resolved.
C) A majority of the cabinet, including the vice president, can declare the president incapable.
D) The vice president has the exclusive power to determine the president's capability.
E) The president must be permanently removed from office.