What Did the Defeat of Republican Presidential Candidate Barry Goldwater

What did the defeat of Republican presidential candidate Barry Goldwater show?

A) The success of the civil rights movement had made conventional Republicans unelectable.
B) The success of the New Deal state had made libertarianism unattractive to Americans.
C) The changing demographic image of the United States had made older presidential candidates unappealing.
D) The civil rights movement had redrawn the political map and opened the South to the Republican Party.
E) Americans were not yet ready for a Jewish presidential candidate.