This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hepatitis Viruses, Subject name: Microbiology
[{'content': 'Carrier state does not exist for: \nSelect and explain. \nA. Hepatitis B virus, B. Hepatitis A virus, C. Non A Non B Hepatitis, D. Delta agent', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e. Hepatitis A virus(Ref: Harrison, 18th/e, p. 2546; 19th/e, p. 2006)CarrierPresentAbsentHBV HAV HCV HEV HDV (only with HBV ) Remember: Non A, Non B hepatitis is HCV.", 'role': 'assistant'}]