What Is the Link Between Campaign Donations and Influence with Elected

What is the link between campaign donations and influence with elected officials?

A) There is a strong relationship between giving money and being able to buy votes.
B) Most campaign donations go to opposition politicians in an attempt to get them to support a cause.
C) At most, campaign donations might buy a donor access to see an elected official.
D) Elected officials often refuse to accept donations from groups they agree with.
E) Groups tend to give money to elected officials who are undecided.