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 morphine withdrawl, except: \nSelect and explain. \nA. Piloerection, B. Insomnia, C. Discharge from nose, D. Constipation', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Constipation', 'role': 'assistant'}]