This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Child Psychiatry, Subject name: Psychiatry
[{'content': 'According to DSM 5 criteria, all are true about ADHD except: \nSelect and explain. \nA. Adult ADHD symptoms are similar to children, B. For diagnoses, symptoms should be present before 7 years, C. For diagnoses, symptoms should be present before 12 years, D. Symptoms should be present in more than one setting', 'role': 'user'}, {'content': 'Answer: B \nExplanation: According to DSM-5 symptoms should be present before 12 yrs of age to make a diagnosis of ADHD.', 'role': 'assistant'}]