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
Surrogate marker for MRSA detection is ? 
Select and explain. 
A. Cefotaxime, B. Ceftazadime, C. Cephloridine, D. Cefoxitin
D: Cefoxitin
Answer: D: Cefoxitin 
Explanation: Ans. is 'd' i.e., CefoxitinTesting with cefoxitin as a surrogate marker for the detection of methicillin resistance was very accurate with both disc both disc diffusion and agar dilution methods.Such testing clearly distinguished methicillin-resistant strains of S.aureus from methicillin-susceptible strains.