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
Which among the following is not an RNA virus? 
Select and explain. 
A. Hepatits A, B. Hepatitis B, C. Hepatitis C, D. Hepatitis D
B: Hepatitis B
Answer: B: Hepatitis B 
Explanation: Ans: b (hepatitis B) Ref:Ananthanarayan, 7 p. 547Among the hepatitis virus only DNA virus is hepatitis B virus (Hepadna virus). Just go through theFeatureHAVHBVHCVHDVHEVAgentSSRNA icosahedral,capsid unenvelopedDSRNAComplex structure envelopedSSRNA envelopedSS defective virus envelopedSSRNA unenvelopedClassificationPicoma virus(enterovirus typelll)Hepadna virusFlaviUnknowncalcivirusTransmissionfaecooralparentralparentralparentralfaecooralIP15-45 days(2-6 weeks)30-180 days(2-6 mon)30-90 days 1-3 mon30-50 days 1-2 mon50-60 days 1/2 - 2 monthOnsetacuteinsiduousinsiduousinsiduousacuteIllnessmildOcc. severemoderateOcc. severeMild except in pregnancy (fulminant in 40 %)Carrier statenilcommonpresentNil(only with HBV)niloncogenicityNilyesyesnilNilSpecific Rx.Ig & vaccineIg& vaccinenilHBV vaccineNil