This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Forensic Toxicology - Concepts, Statutes, Evidence, and Techniques, Subject name: Forensic Medicine
[{'content': 'Plumbism is? \nSelect and explain. \nA. Lead poisoning, B. Mercury poisoning, C. Thallium poisoning, D. Copper poisoning', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Lead poisoning o Plumbism is chronic lead poisoning.", 'role': 'assistant'}]