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': 'Following are features of catatonic schizophrenia,except- \nSelect and explain. \nA. Mutism, B. Echolalia, C. Waxy flexibility, D. Deep tendon reflexes are increased', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]