Why Is Early Adolescence a Time During Which Parents' Knowledge

Why is early adolescence a time during which parents' knowledge of their adolescent's behavior declines?

A) Parents are less likely to supervise their adolescent children during this period.
B) Adolescents become less likely to spontaneously disclose information to their parents.
C) Parents are less likely to to supervise their adolescent children and adolescents become less likely to spontaneously disclose information to their parents during this period.
D) None of these is correct.