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: Surgery
[{'content': 'Most common brain tumour is \nSelect and explain. \nA. Astrocytoma, B. Meningioma, C. Metastasis, D. Oligodendroma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer- C. MetastasisMC brain tumors - MetastasesMC primary brain tumor - GliomaMC Glioma - AstrocytomasMC Astrocytomas - Glioblastoma multiforme', 'role': 'assistant'}]