One Advantage of Social Roles Is That They Make Individuals

One advantage of social roles is that they make individuals' rights and responsibilities clear for group members.One disadvantage of such roles,however,is that they

A) are not as powerful as norms in guiding behaviours.
B) may not share a universal understanding among group members.
C) are assigned arbitrarily.
D) are less fair than norms and are therefore more harmful.
E) can lead people to lose their own personal identity.