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': 'Chelating agent used in mercury poisoning is \nSelect and explain. \nA. Calcium disodium edetate, B. Desferrioxamine, C. Penicillamine, D. BAL', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., BAL", 'role': 'assistant'}]