This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Anatomy
Which of the following debts is least likely to required dosage reaction in Renal dysfunction 
Select and explain. 
A. Amikacin, B. Ciprofloxain, C. Clindamycin, D. Vancomycin
C: Clindamycin
Answer: C: Clindamycin 
Explanation: Ref-KDT 6/e p731,732 Clindamycin is excreted by biliary route and therefore can be used safely in renal dysfunction, Other drugs excreted in bile are: Ampicillin Nafcillin Chloramphenicol Novobiocin Rifampicin Doxycycline