Why were most Southern Democrats, like South Carolina’s Strom Thurmond, in opposition to the civil rights acts of the late-1950s and early 1960s?

A) Allowing more rights for minorities was in opposition to Jim Crow policies and traditions enacted and maintained by many Southern Democrats and the party’s supporters.
B) According to most Southern Democrats of the time, the civil rights acts of the late-1950s and early-1960s did not do enough to protect the voting rights of minorities.
C) Allowing more rights for minorities would require a change to the method of choosing the President, since the Electoral College never included voting rights for minorities.
D) According to most Southern Democrats of the time, any civil rights act would require more research, work, and cost by the national government every ten years during a census.