Which of the Following Did Richard Nixon Do in Order

Which of the following did Richard Nixon do in order to undermine the Democrats and increase his own chances of winning the election in 1968?

A) He secretly contacted the South Vietnamese government and offered better terms for peace negotiations, hoping to sabotage Johnson's efforts to end the war sooner.
B) He had aides spread confusing information about voter registration in rural communities throughout the South to cut down on the number of overall votes.
C) He hired a private investigator to dig up negative information on Humphrey and accused him of being an adulterer.
D) He promised to repeal the Hart-Celler Act, which had been incredibly unpopular and partisan, as a means of stealing part of Humphrey's base.
E) He hired actors to admit that they had been Communist spies within the Democratic party and sparked a new Red Scare.