Which of the Following Is an Argument Advanced by Advocates

Which of the following is an argument advanced by advocates of presidential power?

A) The Electoral College is a better election mechanism than single-member districts.
B) Presidents tend to be much smarter than the average member of Congress or federal judge.
C) The presidency is a more democratic institution than the Congress because the president is the only elected official with a national constituency.
D) A very strong executive is central to a successful separation of powers system.
E) The federal courts are too heavily influenced by public opinion because judges are subject to impeachment.