Which Statement Best Characterizes the Southern Democratic Response to Johnson's

Which statement best characterizes the Southern Democratic response to Johnson's civil rights legislation?

A) They opposed it, filibustered it, but eventually caved and passed it.
B) They opposed it, amended it, and eventually passed a watered-down version.
C) They initially supported it, then filibustered it, and succeeded in defeating it.
D) They opposed it, then supported it, but then ended up filibustering it.