Which of the Following Is NOT Generally One of the Advantages

Which of the following is NOT generally one of the advantages incumbents wield over challengers?

A) Incumbents can send mail to their constituents at the government's expense.
B) Incumbents are more likely to be able to hide their political leanings to attract a broader base.
C) Donors tend to contribute more money to incumbents, who seem like a safer bet than challengers.
D) Incumbents are able to keep themselves in the public eye by making periodic public announcements or initiating new policies.
E) Incumbents are able to pull strings of government to win the favor of individual constituents.