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: Radiology
[{'content': 'Dural tail sign is high suggestive of \nSelect and explain. \nA. Meningioma, B. Metastases, C. Glioma, D. Acoustic neuroma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Dural tail sign - highly s/o meningioma.\nOther lesions are metastasis, glioma, acoustic neuroma, sarcoidosis.', 'role': 'assistant'}]