This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroradiology, Subject name: Radiology
[{'content': 'The most common brain tumor is \nSelect and explain. \nA. Meningioma, B. Oligodendroglioma, C. Secondaries, D. Craniopharyngioma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Most common Brain tumors are Secondaries or metastasis Most Common primary Brain tumor is a Meningioma Most common intraparenchymal Brain tumor is Glioma Most common calcifying Brain tumors is Craniopharyngioma Most common intraparenchymal calcifying Brain tumors is Oligodendroglioma', 'role': 'assistant'}]