What Is One of the Major Concerns for Specialized Interest

What is one of the major concerns for specialized interest groups working in an issue area?

A) Small groups will be swallowed by larger groups with more resources.
B) Similar groups appeal to the same supporters and this makes the formation of coalitions tricky.
C) Politicians will focus their attention on the group that can deliver the greatest electoral advantages.
D) Too many groups working at cross-purposes undermines any effort to secure policy changes from the government.