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': 'Hyperpigmentation of palms & soles is seen in which poisoning \nSelect and explain. \nA. Arsenic, B. Mercury, C. Lead, D. Copper', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Arsenic', 'role': 'assistant'}]