This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Surgery
[{'content': 'MC intracranial Brain tumor in adults \nSelect and explain. \nA. Astrocytoma, B. Mets, C. Meningioma, D. Oligodendroglioma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) MetsRef: Bailey 27th edition Page 663* MC brain tumor is Cerebral mets* MC primary to produce brain mets Lungs (40%) > Breast (15%)', 'role': 'assistant'}]