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: Medicine
The antibacterial agent which can be used intranasally as the prophylaxis against recurrent S.aureus infection is: 
Select and explain. 
A. Cefazolin, B. Mupirocin, C. Gentamicin, D. Moxifloxacin
B: Mupirocin
Answer: B: Mupirocin 
Explanation: Mupirocin is a simple agent which can be used intranasally as prophylaxis against S.aureus. Ref: Harrisons Edition-18, Page : 1148, Table-133/9.