This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
[{'content': 'The commonest space-occupying lesion in the cerebellopontine angle is \nSelect and explain. \nA. Meningioma, B. Glioma, C. Neurofibroma, D. Acoustic neuroma', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Common tumors of CP (cerebellopontine) angle are 1. Acoustic neuroma (commonest: 80- 90%) 2. Meningioma (2nd commonest: 5- 10%) Ref: Harrison; 20th edition , pubmed.com', 'role': 'assistant'}]