Ezio and His Friends Are Constantly Teased by a Group

Ezio and his friends are constantly teased by a group of boys in their grade 4 class, who make comments about their clothes, their haircuts, and their behaviour in class. Teasing by this group typifies the actions of

A) an out-group toward members of another out-group.
B) an in-group toward members of other in-groups and out-groups.
C) an in-group toward members of an out-group.
D) an in-group toward other members of another in-group.