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
Reverse transcriptase of HBV is coded on 
Select and explain. 
A. s gene, B. x gene, C. c gene, D. p gene
D: p gene
Answer: D: p gene 
Explanation: P is the large gene having 3 enzymatic activities

DNA polymerase activity
Reverse transcriptase activity
RNase H activity.