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': '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: Ans. is 'a' i.e. HCV Hepatitis B and Hepatitis C viruses can cause hepatocellular carcinoma.", 'role': 'assistant'}]