Aronson's Jigsaw Technique Involved Having Elementary School Children

Aronson's jigsaw technique involved having elementary school children:

A) study in small,racially mixed teams and then compete with other teams in a class tournament.
B) form academically and racially diverse groups,with each member of the group becoming an expert in one area.
C) role-play being members of another race for two-week periods.
D) take turns telling each other about their family backgrounds in small group discussions.