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
[{'content': 'Reverse transcriptase of HBV is coded on \nSelect and explain. \nA. s gene, B. x gene, C. c gene, D. p gene', 'role': 'user'}, {'content': 'Answer: D \nExplanation: P is the large gene having 3 enzymatic activities\n\nDNA polymerase activity\nReverse transcriptase activity\nRNase H activity.', 'role': 'assistant'}]