How is the influence of exit polls related to the U.S. presidential vote, in com

How is the influence of exit polls related to the U.S. presidential vote, in comparison to the House or state legislatures?

A) Immense evidence has been found that exit polls influence the U.S. presidential vote, as well as influencing other contests for the House, Senate, or state legislatures.
B) No evidence has been found that exit polls influence the U.S. presidential vote, and they are though not to influence other contests for the House, Senate, or state legislatures either.
C) No evidence has been found that exit polls influence the U.S. presidential vote, but they might influence other contests for the House, Senate, or state legislatures.
D) Some evidence has been found that exit polls influence the U.S. presidential vote, but have been proven not to influence other contests for the House, Senate, or state legislatures.

This is for my political science class.