This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Liver, Subject name: Pathology
[{'content': 'Most common tumor of liver is: \nSelect and explain. \nA. Cavernous hemangioma, B. Hepatocellular carcinoma, C. Adenoma, D. Metastasis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) MetastasisRef: Harrison 19th ed. Z544* Most common tumor of liver is metastasis* Most common benign tumor of liver is cavernous Hemangioma* Most common cause of hepatocellular cancer is hepatitis B.', 'role': 'assistant'}]