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
Which of the following drugs require dose adjustment in renal failure - 
Select and explain. 
A. Cefoperazone, B. Doxycycline, C. Streptomycin, D. Rifampicin
C: Streptomycin
Answer: C: Streptomycin 
Explanation: Ans. is 'c' i.e., Streptomycin