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: Unknown
[{'content': 'Most common Tumor (Arrow) shown in Part of the brain among children is \nSelect and explain. \nA. Ependyoma, B. Medulloblastoma, C. DNET, D. Astrocytoma', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans-Astrocytoma (Part shown: Cerebellum}', 'role': 'assistant'}]