How Did President Grant Respond to the Ku Klux Klan

How did President Grant respond to the Ku Klux Klan?

A) He did nothing to attempt to stop the Ku Klux Klan because he saw it as the duty of the southern state legislatures and did not want to be seen as interfering, especially with his hopes of being elected to a second presidential term.
B) He had been a slave owner himself previously, and because he was worried he would lose support if anyone found out about this part of his past, he left it to Congress to give a public reaction to events initiated by the Ku Klux Klan.
C) He eradicated the Ku Klux Klan in the South by giving the Klansmen incentives to profit from industries separate from those that had traditionally demanded the use of slave labor, such as cotton and tobacco cultivation.
D) He urged Republicans to pass three Enforcement Acts, which, although intended to protect black rights and punish those who threatened them, were not consistently enforced, allowing the violent efforts of southern whites to end Reconstruction to intensify.
E) He took a middle-of-the-road approach by refusing to renounce the Ku Klux Klan publicly but, at the same time, working closely himself with local law enforcement to successfully squash the Klan's activities and meetings.