Which of the Following Is True of the Vice Presidency

Which of the following is true of the vice presidency?

A) Presidents in the nineteenth century paid more attention to their vice presidents and granted them more authority.
B) The Constitution assigns no executive authority to the vice president.
C) Jimmy Carter reduced the power of the vice presidency by removing the vice president's office from the White House.
D) The constitutional powers of the vice presidency have been increased by Congress twice during U.S.history.
E) Daniel Webster and Henry Clay accepted nominations to the vice presidency as stepping stones to the presidency.