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
Drug of choice for Methicillin resistant staphylococcus aureus is (MRSA) - 
Select and explain. 
A. Amoxicillin-Clavulanate, B. Vancomycin, C. Flucloxacillin, D. CI indamycin
B: Vancomycin
Answer: B: Vancomycin 
Explanation: Ans. is 'b' i.e., Vancomycin