Which Appears to Be Most Effective for Treatment of Conduct

Which appears to be most effective for treatment of conduct disorders?

A) Treatment for conduct disorder is most effective when it implements systematic desensitization for children and insight therapy for their parents.
B) Treatment for conduct disorder is most effective when implemented before patterns of disruptive behavior are firmly established.
C) Treatment for conduct disorder is most effective when it involves stimulant medication and social skills role playing.
D) Treatment for conduct disorder is most effective when it utilizes hypnosis and psychoanalysis.