The Tension Between Being Responsive to Constituents but Responsible to National

The tension between being responsive to constituents but responsible to national interest contributes to Congress's image problem. This is because:

A) it is interpreted as gridlock, and expectations are often impossible to meet.
B) Congress will always choose the national interest over their constituents' interests.
C) it leads to meaningless legislation.
D) Congress will always choose their constituents' interest over the national interests.
E) it leads to too much legislation.