Why Might Parties at the State Level Have Less Power

Why might parties at the state level have less power than those at the national level?

A) The creation of party primaries took control of the nomination from party leaders and gave it to the voters.
B) Voters are more concerned with policy proposals, such as public works programs, rather than partisanship.
C) The rise of media campaigns made candidates more reliant on money than local party volunteers.
D) Much needed funding is usually donated to the national party level, leaving states without much influence.