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
Hepatitis virus without envelope: 
Select and explain. 
A. HAV, B. HBV, C. HCV, D. HDV
A: HAV
Answer: A: HAV 
Explanation: Ans. (a) HAV Ref. Harrison 19/e, p 2006, 18/e, p 2539 HAV is a nonenveloped ss RNA virus of picorna family For details see answer no 12 of chapter 27.