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: Medicine
[{'content': 'Severe painful sensorimotor and autonomic neuropathy along with alopecia may suggest poisoning with: \nSelect and explain. \nA. Thallium, B. Arsenic, C. Lead, D. Copper', 'role': 'user'}, {'content': "Answer: A \nExplanation: Severe painful sensorimotor and autonomic neuropathy along with alopecia--thallium Severe painful sensorimotor neuropathy / GI disturbance and Mee's lines--arsenic Wrist or finger extensor weakness / anemia and basophilic stippling of red blood cells--lead Ref: Harrison, Edition-18, Page-3450.", 'role': 'assistant'}]