This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
[{'content': 'A 12-year-old boy presents with disruptive behaviour at school, aggression towards teachers and truancy. He was recently suspended from the school for destruction of school propey. Which of the following diagnosis best suits his presentation? \nSelect and explain. \nA. Oppositional defiant disorder, B. Conduct disorder, C. Attention deficit hyperactivity disorder, D. Autism spectrum disorder', 'role': 'user'}, {'content': "Answer: B \nExplanation: Conduct disorder in children is characterised by behaviours which could cause harm to self or others or propey. Cruelty to animals is also a feature. There is frequent violation of the rights of others and rule breaking behaviours. The behaviours are persistent and not occasional.Ref: Kaplan & Sadock's Synopsis of Psychiatry: Benjamin J Sadock, M.D., Harold I. Kaplan, Virginia A Sadock, M.D, Edition: 10, Page 1218", 'role': 'assistant'}]