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: Pharmacology
[{'content': 'Which of the following drugs require dose adjustment in renal failure - \nSelect and explain. \nA. Cefoperazone, B. Doxycycline, C. Streptomycin, D. Rifampicin', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Streptomycin", 'role': 'assistant'}]