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
[{'content': 'Drug of choice for Methicillin resistant staphylococcus aureus is (MRSA) - \nSelect and explain. \nA. Amoxicillin-Clavulanate, B. Vancomycin, C. Flucloxacillin, D. CI indamycin', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Vancomycin", 'role': 'assistant'}]