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': 'Most common site of colonization of Staph.Aureus \nSelect and explain. \nA. Axilla, B. Skin, C. Groin, D. Anterior nares', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Anterior nares is most common site followed by skin, perineum,\xa0axilla and groins.', 'role': 'assistant'}]