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 hepatitis virus had been called as enterovirusa 
Select and explain. 
A. HAV, B. HBV, C. HCV, D. HEV
A: HAV
Answer: A: HAV 
Explanation: Ans. is 'a' i.e. HAV . HAV has been classified in genus Hepatovirus in the family picornavirus. . It was originally designated as enterovirus 72.