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': 'Chinese herb nephropathy is caused by \nSelect and explain. \nA. Mushroom, B. Lead poisoning, C. Aristolochic acid, D. Tenofovir', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Aristolochic acid causes\xa0Chinese herb nephropathy and Balkan nephropathy.', 'role': 'assistant'}]