In 1877, President Rutherford B. Hayes withdrew the last federal troops from the capitals of the Reconstruction states. Which of these was an effect of this decision?
A) President Hayes was impeached by Congress and removed from office.
B) Support from the southern states helped him win re-election in 1881.
C) More African-American politicians were elected to seats in the U.S. Congress.
D) Subversive groups like the Ku Klux Klan and the Redeemers regained control of politics in the southern states