Participants in One Study Were Either Frustrated or Not Frustrated

Participants in one study were either frustrated or not frustrated. They then were given what they thought was an opportunity to administer electric shocks to another person. Sometimes this other person was the one who had frustrated them, and sometimes it was a stranger. The researchers found that

A) frustration increased aggression but only against the person who frustrated the participants.
B) frustration increased aggression against both the person who had frustrated the participants and the stranger.
C) frustration led to an increase in aggression against the person who had frustrated the participants, but a decrease in aggression against the stranger.
D) frustration did not affect aggression levels in this experiment.