The Who of Politics Includes Voters,candidates,groups and Parties; the What

The who of politics includes voters,candidates,groups and parties; the what refers to the

A) media organizations that cover voters,candidates,groups,and parties.
B) institutions that respond to voters,candidates,groups,and parties.
C) substance of politics and government-benefits and burdens.
D) procedures through which voters,candidates,groups,and parties get what they want.
E) winners and losers.