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
All dentists must take a prophylaxis for hepatitis B by vaccinating themselves at 
Select and explain. 
A. 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
D: 0,1,2 and 12 months intervals
Answer: D: 0,1,2 and 12 months intervals 
Explanation: None