This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
Number of doses of HDCV vaccine required for preexposure prophylaxis - 
Select and explain. 
A. 7, B. 5, C. 3, D. 1
C: 3
Answer: C: 3 
Explanation: Pre exposure prophylaxis requires 3doses(0,7,21. REF:<\p> ANANTHA NARAYANAN MICRONIOLOGY NINTH EDITION PAGE.536