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) Both A and B are true.
D) Neither A nor B is true. Parents are more likely to be privy to their child's behavior and whereabouts during early adolescence than earlier and later time-points.