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: Microbiology
[{'content': 'A diabetic patient developed cellulitis due to S.aureus, which was found to be methicillin re-\nsistant on the antibiotic sensitivity testing. All the following antibiotics will be appropriate except: \nSelect and explain. \nA. Vancomycin, B. Imipenem, C. Teichoplanin, D. Linezolid', 'role': 'user'}, {'content': 'Answer: B \nExplanation: “Imipenam is not effective against Enterococcus faecium, MRSA, Clostridium difficle, Burkholderia cepacia as they produce metallobetalactmases"\nTREATMENT OF MRSA', 'role': 'assistant'}]