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 of the following hepatitis virus is transmitted by fecal-oral route? 
Select and explain. 
A. HAV, B. HBV, C. CHV, D. HDV
A: HAV
Answer: A: HAV 
Explanation: Ans. is 'a' i.e., HAV