Which of the Following Best Describes the Theoretical Effect Elections

Which of the following best describes the theoretical effect elections have on corruptibility of politicians?

A) Voters could be on the jury of an elected official on trial, and hence politicians are checked on their ability to be corrupt.
B) Democracies are generally never corrupt.
C) Politicians want to stay in office, and generally want to do things, like avoiding corruption, that will keep them in office.
D) Elected politicians are more likely to take bribes than those who are not elected.
E) Elections have no effect on whether an elected official is corrupt or not.