question: Q:A parent-teacher conference is called to discuss the behavior of a 9-year-old boy. According to the boy's teacher, he has become progressively more disruptive during class. He is performing poorly in school and has trouble focusing. He is destructive to classroom property, tore a classmate's art project, and takes other children's lunches regularly. He is avoided by his classmates. His mother reports that her son can "sometimes be difficult." Recently he placed a rubber band around the cats tail, resulting in gangrene. What is the most likely diagnosis?? 
  {'A': 'Conduct disorder', 'B': 'Oppositional defiant disorder', 'C': 'Antisocial personality disorder', 'D': 'Attention deficit disorder', 'E': 'Separation anxiety disorder'},