Which of the Following Statements About the Development of Self-Concept

Which of the following statements about the development of self-concept is true?

A) As children move into adolescence, self-concept is increasingly vested in feedback from close friends.
B) A large discrepancy between an ideal self and a real self boosts self-esteem.
C) In middle childhood, self-descriptions rarely include reference to social groups.
D) School-age children often avoid making social comparisons when describing themselves.