In Recent Years, Ideological Polarization Has Undermined the Ability of American

In recent years, ideological polarization has undermined the ability of American political parties to bridge elections and governance, because:

A) infighting within both the Democratic and Republican parties has left them dysfunctional.
B) interest groups feel pressured to pick one party over the other in campaign finance efforts, making it harder for parties to build broad policymaking coalitions.
C) Republicans and Democrats have been less likely to work together and make compromises in finding solutions to national problems.
D) the two parties have been increasingly less likely to come up with new and workable policy ideas, given a lack of internal competition.