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 person aged 36 years is having firm belief that his wife is having affair. He often sits alone, muttering himself and hears voices commenting about him. He was absolutely normal 2 weeks before.\nMost likely diagnosis is \nSelect and explain. \nA. Schizophrenia, B. Delusional disorder, C. Acute psychosis, D. Somatoform disorder', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The patient has paranoid delusion & hallucination, 2 out of 5 symptoms are present. But the complaints are from post 2 weeks. Hence, the diagnosis is Acute Psychosis not Schizophrenia (according to ICD - 10) symptoms should be present for atleast 1 month).', 'role': 'assistant'}]