Why Was the Twenty-Fifth Amendment to the Constitution Adopted

Why was the Twenty-Fifth Amendment to the Constitution adopted?

A) to clear up ambiguities over the constitutional provisions surrounding presidential powers to conduct war
B) to clear up ambiguities over the constitutional provisions surrounding the role of the vice president should the president die or become incapacitated
C) to clear up ambiguities over the constitutional provisions surrounding the president's powers to negotiate treaties
D) to clear up ambiguities over the constitutional provisions surrounding the separate election of the vice president