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: Pediatrics
[{'content': 'WHO grade I tumour is located in Cerebellum On histological examination Rosenthal fibres seen what is the most probable diagnosis? \nSelect and explain. \nA. Medulloblastoma, B. Crainopharyngioma, C. Pilocytic astrocytoma, D. Ependymoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Pilocytic astrocytoma :\n\nWHO grade I tumour.\nUsually occurs in Cerebellum.\nBiphasic tumour.\nRosenthal fibres seen.', 'role': 'assistant'}]