This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Forensic Medicine
[{'content': 'Poisoning caused by bullet retained in body is; \nSelect and explain. \nA. Lead, B. Phosphorus, C. Nitro cellulose, D. Iron', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Lead poisoning may occur due to absorption of lead from lead bullets remaining in body. Synol fluid is capable of dissolving lead', 'role': 'assistant'}]