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
Cultivable (in vitro) hepatitis virus is? 
Select and explain. 
A. Hepatitis A, B. Hepatitis B, C. Hepatitis C, D. Hepatitis D
A: Hepatitis A
Answer: A: Hepatitis A 
Explanation: Ans. is 'a' i.e., Hepatitis A "HAV can be cultivated reproducibly in vitro" - Harrison Remember . HAV is the only cultivable hepatitis virus