This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Pathology
[{'content': 'Which virus causes hepatocellular carcinoma \nSelect and explain. \nA. Arbo, B. Herpes, C. Hepatitis-A, D. Hepatitis-B', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A number of etiologic factors are implicated in the etiology of HCC, most impoant being HBV and HCV infection, and association with cirrhosis. TEXTBOOK OF PATHOLOGY 6TH EDITION HARSH MOHAN PAGE NO:634', 'role': 'assistant'}]