Which of the Following Statements About the Haymarket Affair Is

Which of the following statements about the Haymarket Affair is correct?

A) The explosion of a bomb during the protest fueled employers' efforts to paint the labor movement as dangerous and un-American.
B) The Knights of Labor gained a reputation for peaceful protests that helped them achieve notoriety and evolve into a major political party.
C) Several members of the president's cabinet left in disgrace in response to the revelation that they had engaged in bribery.
D) The demonstration brought about laxer immigration laws and significantly improved the experiences of immigrants in the United States.
E) Race riots in major cities resulted in Congress doing away with the last of the legislation left over from Reconstruction.