Problem: Child A was referred to a community clinic because of overactive, inattentive, and disruptive behavior. His uninhibited behavior caused problems for his teacher and for other students. He would impulsively hit other children knock things off their desks, erase materials on the blackboard and damage books and other school property. He seemed to be in perpetual motion, talking, moving about and darting from one area of the classroom to another. Despite his overactive behavior, inferior school performance and other problems, he was considerably above average in intelligence. Nevertheless, he felt stupid and had a seriously devaluated self-image. Neurological tests revealed no significant organic brain disorder. Child A's case depicts what kind of disorder? Conduct Disorder (CD) Autism Spectrum Disorder (ASD) Intermittent Explosive Disorder (IED) Attention-Deficit Hyperactivity Disorder (ADHD)