Which of the Following Is a Reason Presidential Power Has

Which of the following is a reason presidential power has grown since the nineteenth century?

A) The presidency is characterized by unitary rather than collective decision-making processes.
B) Several constitutional amendments have granted additional expressed powers to the presidency.
C) The powers of the U.S.president were increased when the Senate consented to the United Nations charter in 1945.
D) The growth of Internet-based news increased the role of the president because the White House has a large public relations staff.
E) Congress has tended to delegate increasing power to the president in times of divided government.