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': 'Chronic arsenic poisoning causes: \nSelect and explain. \nA. Pure sensory neuropathy, B. Pure motor neuropathy, C. Mixed sensory and motor neuropathy, D. Painful neuropathy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Mixed sensory and motor neuropathy;', 'role': 'assistant'}]