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
Drugs that can be used to treat infection caused by bacteroides fragilis are all except 
Select and explain. 
A. Metronidazole, B. Trovafloxacin, C. Vancomycin, D. Amikacin
D: Amikacin
Answer: D: Amikacin 
Explanation: (Ref KDT 6/e p719. 720 Drugs used to treat anaerobic organisms include Metronidazole Moxifloxacin and Trovafloxacin Vancomycin Clindamycin Aminogycosides are ineffective against anaerobic organisms