Research Participants Viewed Either Violent or Nonviolent Films for Four

Research participants viewed either violent or nonviolent films for four consecutive nights. On the fifth night, half the participants were told by the experimenter that their performance was terrible and the other half were told they had done well on some task. What group showed the most hostility on the fifth night?

A) the group that watched violence and were told their performance was good
B) the group that watched violence and were told their performance was terrible
C) all participants who watched violence, no matter what they were told
D) all participants who were told their performance was terrible, no matter what they had watched