Ezio and His Friends Are Constantly Teased by a Group

Ezio and his friends are constantly teased by a group of boys in his grade four 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-group toward members of other-groups and out-groups.
C) an-group toward members of an out-group
D) an-group toward other members of another-group.