This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'Next to HBV, virus implicated in hepatocellular Ca is - \nSelect and explain. \nA. HCV, B. Herpes, C. HAV, D. HEV', 'role': 'user'}, {'content': 'Answer: A \nExplanation: About 80%of pts progress to chronic hepatitis with some developing cirrhosis and hepatocellular carcinoma REF:ANANTHANARYANAN TEXTBOOK OF MICROBIOLOGY 9EDITION PGNO.548', 'role': 'assistant'}]