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': 'The following symptoms may be seen in opium withdrawal - \nSelect and explain. \nA. Tremors, B. Lacrimation, C. Dry nose and mouth, D. Constipation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: All body surface secretions are increased → sweating, lacrimation, rhinorrhoea.', 'role': 'assistant'}]