One Reason Why Many People Form Stereotypes Is That

One reason why many people form stereotypes is that

A) we tend to remember unusual behavior by unusual individuals even if the same behavior is equally common in ordinary individuals.
B) we tend to remember what ordinary individuals have done and then assume that unusual individuals must behave in an opposite way.
C) unusual individuals are not subject to the group polarization effect.
D) we attribute other people's behavior mostly to the situation.