What Is the Point of the Figure in the "Mapping

What is the point of the figure in the "mapping American politics" section in the text??

A) To demonstrate the relative imbalance of early primaries and caucuses to presidential nominations.
B) To demonstrate the relative winners and losers in the federal grants game, from federal taxes paid to federal monies received.
C) To demonstrate the relative differences in representation by the states for the US Senate.
D) To demonstrate the relative power that farm states have over agriculture policy.
E) To demonstrate and predict which states are likely to receive more grant money, or pay more in taxes to the federal government