Within the Last Few Years,power in Congress Has Become More

Within the last few years,power in Congress has become more

A) decentralized with the proliferation of subcommittees and caucuses.
B) controlled by the influence of interest groups and PACs.
C) centralized,with more power in the hands of senior party leaders.
D) dependent on the relationship between the members of Congress and the president as the chief legislator.
E) constructive in terms of the relationship between the constituents and their representatives due to a large increase in well-informed constituents.