Pls HELP its for a TEST Which conclusion concerning the role of interest groups can be drawn from the graph?

A) Interest groups hire many people, increasing the number of jobs related to the political process.
B) Interest groups self-regulate lobbying, ensuring that each group is acting appropriately and that laws are being followed.
C) Interest groups can monitor voting, ensure that procedures are being followed in the House and Senate, and revise legislation as needed.
D) Interest groups can educate voters and office holders, draft legislation, and mobilize members to pressure and work with legislators and government agencies.