With Respect to the Question of Black Suffrage in the South

With respect to the question of black suffrage in the South, Andrew Johnson believed that

A) the right to vote should be extended to African Americans through an amendment to the Constitution.
B) the federal government could never force the southern states to extend voting rights to African Americans.
C) the southern states, before being allowed to re-enter the Union, should guarantee the right to vote to African American males.
D) African Americans were not citizens and should not be allowed to vote.