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': 'Safest anti TB drug in renal diseas - \nSelect and explain. \nA. Steptomycin, B. Capreomycin, C. Rifampicin, D. Ethambutol', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]