Critics charge that PAC contributions influence public policy, while political scientists have

A) ?found concrete links between campaign donations and the way members of Congress vote.
B) found that legislators listen to their constituents and not PAC influences.
C) not been able to document any consistent link between campaign donations and the way members of Congress vote.
D) ?not studied this relationship.
E) ?shown that money matters more than ideology when it comes to PAC influence.

C