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
Carrier state does not exist for ? 
Select and explain. 
A. Hepatitis B virus, B. Hepatitis A virus, C. Non A Non B Hepatitis, D. Delta agent
B: Hepatitis A virus
Answer: B: Hepatitis A virus 
Explanation: Ans. is `b' i.e., Hepatitis A virus