What Did the "Red Scare" Reveal About the Darker Side

What did the "Red Scare" reveal about the darker side of American society?

A) There was a deep undercurrent of intolerance and bigotry in American society.
B) Americans were more interested in economic growth than in personal liberties.
C) Racism emerged as a new phenomenon in the America of the 1920s.
D) Americans were willing to tolerate immigrants and racial minorities as long as they stayed out of political life.
E) There was a general indifference toward issues of race, ethnicity, and national identity in the United States at that time.