Which of the Following Is True About African American Involvement

Which of the following is true about African American involvement in the political arena during Reconstruction?

A) Most southern states had black majorities in their state legislatures.
B) Because slavery was still so prominent, black political rights were practically nonexistent.
C) The most common form of black political participation was voting in elections.
D) Most black voters registered as Democrats before 1870.
E) No freedmen were able to vote before the ratification of the Fifteenth Amendment.