Which of the Following Is True of the President's Veto

Which of the following is true of the president's veto power?

A) Presidents are limited in their use of the veto on legislation directly affecting national security or economic policy.
B) The threat of a veto has never proven to be enough to make Congress bend to the president's demands.
C) Congress can usually muster the two-thirds majority in each chamber required to override a presidential veto.
D) The veto is as much a sign of presidential weakness as of strength,because it arises when Congress refuses to accept the president's ideas.
E) President Bush used the veto less and less during the course of his presidency so as not to cause his popularity to fall.