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': 'Linezolid is best used for : \nSelect and explain. \nA. MRSA, B. VRSA, C. K.pneumoniae, D. E.coli', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]