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': "A middle aged man presented with paraesthesia of hands and feet. Examination revealed presence of 'Mees' lines in the nails and raindrop pigmentation in the hands. The most likely diagnosis is: AIIMS 08, 09, 11 \nSelect and explain. \nA. Lead poisoning, B. Arsenic poisoning, C. Thallium poisoning, D. Mercury poisoning", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Arsenic poisoning', 'role': 'assistant'}]