Social Media Has Proven to Be a Boon to Small

Social media has proven to be a boon to small and specialized public interest groups, given that it allows them to:

A) easily swarm over and shout down opponents in public posts and replies to tweets.
B) efficiently find and mobilize adherents nationwide.
C) communicate more effectively with other like-minded interest groups.
D) more easily find compromising information about elected officials who oppose their goals.