According to the Social Animal, the Jigsaw Technique Was Successful

According to The Social Animal, the jigsaw technique was successful in overcoming hostility in the classroom because:

A) it appealed to natural altruistic tendencies in children before they outgrew them.
B) it capitalized on children's self-interest to do well in school.
C) teachers allowed students to choose the members of their group.
D) collaboration reduces the amount of time students need to spend with one another.