This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Toxicology - 1, Subject name: Forensic Medicine
[{'content': 'Which of the following chelating agent is not used in lead poisoning \nSelect and explain. \nA. EDTA, B. CUPRIMINE, C. DMSA, D. DESFERRIOXAMINE', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Chelating agent used in lead poisoning a) EDTA b) CUPRIMINE c) DMSA d) BAL e) DMPS', 'role': 'assistant'}]