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': 'Most common malignant mesenchymal tumor of liver is - \nSelect and explain. \nA. HCC, B. Cholangiocarcinoma, C. Angiosarcoma, D. Hepatoblastoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer- C. AngiosarcomaAngiosarcoma is the most common malignant mesenchymal neoplasm of the liver.', 'role': 'assistant'}]