This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
[{'content': 'Acute Viral hepatitis A & E are diagnosed by \nSelect and explain. \nA. IgM A & IgM E, B. IgG A & IgG E, C. Liver biosy, D. Virus in stool', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (A) IgM A & IgM E CLINICAL AND EPIDEMIOLOGIC FEATURES OF VIRAL HEPATITISFeatureHAVHBVHCVHDVHEV* Incubation (days)15-45, mean 3030-180, mean 60-9015-160, mean 5030-180, mean 60-9014-60, mean 40* OnsetAcuteInsidious or acuteInsidiousInsidious or acuteAcute* Age preferenceChildren, young adultsYoung adults (sexual and percutaneous), babies, toddlersAny age, but more common in adultsAny age (similar to HBV)Young adults (20-10 years)Transmission* Fecal-oral+ + +---+ + +* PercutaneousUnusual+ + ++ + ++ + +-* Perinatal-+ + +++-* Sexual++ +++ +-Clinical* SeverityMildOccasionally severeModerateOccasionally severeMild* Fulminant0.1%0.1-1%0.1%5-20%1-2%', 'role': 'assistant'}]