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': 'All dentists must take a prophylaxis for hepatitis B by vaccinating themselves at \nSelect and explain. \nA. 0,1 and 6 months intervals, B. 0 and 6 months intervals, C. 0,1 and 2 months intervals, D. 0,1,2 and 12 months intervals', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]