This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
[{'content': 'Most common Primary Brain tumor is \nSelect and explain. \nA. Glioma, B. Glioblastoma, C. Meningioma, D. Medulloblastoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (A) Glioma', 'role': 'assistant'}]