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 antibacterial causes both ototoxicity and nephrotoxicity : 
Select and explain. 
A. Methicillin, B. Vancomycin, C. Clindamycin, D. Azithromycin
B: Vancomycin
Answer: B: Vancomycin 
Explanation: None