Which Statement Is True About the Ku Klux Klan (KKK)

Which statement is true about the Ku Klux Klan (KKK) ?

A) The KKK was primarily concerned with stopping Asian immigration to the South.
B) Founded in 1866 in Tennessee, the KKK was a terrorist organization that attacked black and white Republicans during Reconstruction.
C) Most southern planters, merchants, and Democratic politicians who considered themselves "respectable citizens" publicly condemned the Klan.
D) President Grant's dispatching of federal marshals and troops in 1871 failed to have any effect on Klan violence.
E) The KKK functioned as the military arm of the Republican Party in the South.