What Are the Greatest Dangers Associated with a Trustee Model

What are the greatest dangers associated with a trustee model of representation?

A) Members of the Congress may not bring back enough pork-barrel projects to their districts.
B) Representatives may become inattentive to the wishes and opinions of their constituents.
C) Members of Congress may give inadequate deference to the executive branch in the area of national security.
D) The representatives who adopt this model are too influenced by special interest groups.
E) Members of Congress may become too polarized,and bipartisanship will decrease significantly.