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': 'In catatonic schizophrenia, all are seen except : \nSelect and explain. \nA. Mannerism, B. Negativism, C. Echolalia, D. Flight of ideas', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D. i.e. Flight of ideas', 'role': 'assistant'}]