The Supreme Court's Landmark Decision in Citizens United V

The Supreme Court's landmark decision in Citizens United v.Federal Election Commission (2010) was significant because it

A) dramatically decreased the flow of money from interest groups, 527s, and Super PACs into politics and electoral campaigns.
B) dramatically increased the flow of money from interest groups, 527s, and Super PACs into politics and electoral campaigns.
C) prohibited 527s and Super PACs from donating to electoral campaigns but increased the amount of money interest groups could contribute.
D) prohibited interest groups from donating to electoral campaigns but increased the amount of money 527s and Super PACs could contribute.