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': 'Most common age for depression is - \nSelect and explain. \nA. Middle age men, B. Middle age female, C. Young girl, D. Children', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Depression is more common in middle-aged (30-40 years) females.', 'role': 'assistant'}]