Greg Has Always Been a Friendly, Affectionate, Confident Child

Greg has always been a friendly, affectionate, confident child.Recently, he has been very irritable, sleeping poorly, and having numerous nightmares.Recently, he does not want to spend time with his friends.When his mother is taking him to the after school tutoring program, he often forgets his notebook and tells his mother that he does not need tutoring anymore. Recently, he was seen riding his bicycle dangerously down the steep hill near his house.When his mother told him that she was scared he would get hurt or killed riding his bicycle like that, Greg just told her that "it didn't matter anymore." The reason for Greg's behaviors may be

A) normal pre-adolescent behaviors.
B) that he is doing poorly in school, knows the tutoring is not helping, and is afraid of being referred for special education.
C) that he is experiencing sexual molestation, possibly at the after school program.
D) that he is showing signs of a conduct disorder.