Which Statement Regarding the Ideologies of the Two Major U

Which statement regarding the ideologies of the two major U.S. parties is accurate?​

A) ​The ideologies of both major parties have clearly remained consistent throughout American history.
B) ​Nixon's pursuit of a Southern strategy in 1968 signaled an ideology change as the long-term process of turning the Southern states into a solid Democratic voting bloc began.
C) ​The Democratic South shifted ideology when it realigned to the Republican Party over the issue of race.
D) ​When Barry Goldwater was nominated by Republicans in 1964, it signaled the party's allegiance to the more liberal principles of expansive government.