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': 'True about Major depressive disorder: \nSelect and explain. \nA. Abnormally diminished activity in prefrontal coex, B. Genetic predisposition is present, C. Monoaminergic system disturbances, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A, C, B i.e. Abnormally diminished activity in prefrontal coex, Monoaminergic system disturbances, Genetic predisposition is present', 'role': 'assistant'}]