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
Potent vaccine is available for - 
Select and explain. 
A. Hepatitis C, B. Hepatitis A, C. Hepatitis D, D. Hepatitis E
B: Hepatitis A
Answer: B: Hepatitis A 
Explanation: A safe and effective formalin inactivated alum conjugated vaccine available for HAV . Which is lasts for10-20 yr REF:ANANTHANARYANAN TEXT BOOK OF MICROBIOLOGY 9EDITION PGNO.542