In an Experiment by Isen, How Did Induced Positive Affect

In an experiment by Isen, how did induced positive affect through the finding of a coin effect human behavior?

A) Those who found the coin behaved more selfishly.
B) Those who found the coin were ambivalent to the person in need.
C) Those who found the coin were more likely to help someone in need.
D) Those who did not find the coin were more likely to help someone in need.