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 for staphylococcus carrier: \nSelect and explain. \nA. Skin, B. Nose, C. Oropharynx, D. Perineum', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is. b. Nose', 'role': 'assistant'}]