Which of These Is a Reason Peer Groups Change from Childhood

Which of these is a reason peer groups change from childhood to adolescence?

A) For most adolescents, social settings become larger and more anonymous.
B) For most adolescents, social settings become smaller and more intimate.
C) Adolescents tend to seek out people who are noticeably different from themselves.
D) Adolescents tend to seek out people who resemble the adolescent's own family members.