What Is a Pocket Veto

What is a pocket veto?

A) a way for the U.S. House speaker to prevent a bill from making it to the floor
B) a ruling by the Supreme Court justices that finds an act of Congress unconstitutional
C) the automatic death of a bill if the president does not sign it in the last ten days of a session
D) the ability of the vice president to stop a bill from passing in the U.S. Senate