Why Are Political Action Committees Much More Important to Political

Why are political action committees much more important to political campaigns now than they were in the past?

A) Unlike giving to candidates or political parties, there are no limits on how much money an individual can give political action committees.
B) Their members have positions of power within the media.
C) They have far and away the largest number of grassroots supporters.
D) Many of their members hold high political office.