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': 'All are features of catatonia except : \nSelect and explain. \nA. Automatic obedience, B. Cataplexy, C. Catalepsy, D. Negativism', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B. i.e. Cataplexy', 'role': 'assistant'}]