What Is the Self-Perpetuating Cycle in Conduct Disorder

What is the self-perpetuating cycle in conduct disorder?

A) A genetic predisposition leads to a low IQ and difficult temperament,which leads to poor parenting and an insecure attachment,which leads to conduct disorder.
B) A genetic predisposition leads to a difficult temperament,which leads to behavior problems,which lead to parental overindulgence and lack of discipline,which leads to conduct disorder.
C) A genetic predisposition leads to an easy temperament but because of abusive parents,this leads to depression which in turn leads to conduct disorder.
D) A genetic predisposition leads to an easy temperament,which leads to parental neglect,which leads to anxiety,which leads to conduct disorder.