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: Forensic Medicine
[{'content': "Magnan's syndrome is associated with: WB 09; BHU 09; MP 11; AFMC 12; NEET 14 \nSelect and explain. \nA. Cocaine, B. OPC, C. Snake bite, D. Alcohol", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Cocaine', 'role': 'assistant'}]