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 tumors is not derived from meninges - \nSelect and explain. \nA. Hemangioblastoma, B. Meningioma, C. Fibrous tumor, D. Hemangiopericytoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Meningeal tumors\n\nMeningothelial tumor : Meningioma (most common meningeal tumor).\nMesenchymal non-meningothelial tumors : Meningeal solitary fibrous tumor, hemangiopericytoma, meningeal sarcoma, fibrous histiocytoma, meningeal melanocytoma, (melanocytic tumor)', 'role': 'assistant'}]