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
Which is SsRNA unenveloped virus: 
Select and explain. 
A. HBV, B. HEV, C. HCV, D. None
B: HEV
Answer: B: HEV 
Explanation: Ans. b. HEV