Which of the Following Was the Outcome of Muzafer Sherif's

Which of the following was the outcome of Muzafer Sherif's Robber's Cave experiment?

A) Blacks and Whites were forced to work together on a common task.
B) Two groups of boys first developed prejudices toward each other and then became friends.
C) Conflict between two groups was prevented by tightly controlling the consequences for conflict.
D) Children learned to be prejudiced against other children who had brown eyes.