Political Parties -What Compelled the Strong Alignment of the Southern States with States

Political Parties
-What compelled the strong alignment of the Southern states with the Democratic Party in the decades following the Civil War?

A) The Democratic Party was more socially progressive than the Republican Party, and the South was eager to "redeem" itself after the Civil War, subsequently swinging to an ideology radically different from slavery.
B) The Democratic Party employed aggressive political tactics on the national and local level, making them a fitting choice for the Southern states, which were controlled by militant and/or violent segregationist groups like the Ku Klux Klan.
C) The Democratic Party intentionally appealed to religious conservatives, who lived primarily in the South.
D) The North was almost entirely Republican (as was President Lincoln) , and the aggressive attempts by the Radical Republican faction to "punish" the South during Reconstruction embittered the region against the Republican Party for nearly a century.
E) Democrats rose to power in the South on the promise to reinstitute slavery.