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 most common type of postpartum psychosis is - \nSelect and explain. \nA. Manic, B. Depressive, C. Organic, D. Hallucination', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Depression is the most common psychiatric manifestation in patients with AIDS, hypothyroidism (Myxedema), post-partum\xa0psychosis, and after an attack of MI.', 'role': 'assistant'}]