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: Pathology
[{'content': 'Which of the following is the most common benign neoplasm of liver \nSelect and explain. \nA. Hepatic adenoma, B. Cavernous hemangioma, C. Lipoma, D. Nodular regenerative hyperplasia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Most common benign neoplasm is cavernous hemangioma\nMost common hepatic neoplasm is metastasis\nMost common primary malignant tumor is Hepatocellular carcinoma.', 'role': 'assistant'}]