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': 'HBV all true, except: \nSelect and explain. \nA. It is a DNA virus, B. Spreads by blood transfusions, C. HBsAg marker of infection, D. Least chance of chronicity', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Least chance of chronicity (Ref: Harrison, 18th/e, p. 2546; 17th/e, p. 1939)* Least chances of chronicity are with HAV and HEV.* Maximum chance of chronicity is with HCV.* 90% of infants infected with HBV , become chronically infected.Remember: By definition,HBV chronic carriers are those in whom HBsAg persists for more than 6 months.", 'role': 'assistant'}]