This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: D.O.C, Subject name: Pharmacology
[{'content': 'Drug of choice used to treat MRSA is? \nSelect and explain. \nA. Metronidazole, B. Vancomycin, C. Imipenem, D. Clindamycin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ANSWER: (B) VancomycinREF: Antibiotic policies: fighting resistance - page 256, Clinical Medicine a Practical Manual for Stud. & pract. by Agarwal - page 372The current drug of choice for serious infections with MRSA remains vancomycin at most institutions\'"Vancomycin in a dose of 1 5 mg/kg to a maximum of lgm, given twice a day, is the drug of choice for MRSA. Teicoplanin in a dose of 400 mg/day in a single dose is equally effective"', 'role': 'assistant'}]