An Adolescent's Parent Comments,"My Son Seems So Preoccupied with His

An adolescent's parent comments,"My son seems so preoccupied with his appearance these days.Is this normal?" The nurse's best response would be:

A) "It is his attempt to express his individualism. "
B) "His preoccupation with his looks is quite normal. "
C) "He is probably troubled with his physical changes. "
D) "This shows that he has a positive self-image. "