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': 'Grimacing and Mannerism is: \nSelect and explain. \nA. Simple Schizophrenia, B. Catatonic Schizophrenia, C. Hebephrenic Schizophrenia, D. Phobia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Catatonic schizophrenia', 'role': 'assistant'}]