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': 'Glioma of the optic nerve is usually – \nSelect and explain. \nA. Gemistocytic, B. Pilocytic, C. Fibrillary, D. Lamellar', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Optic nerve glioma\n\nOptic nerve glioma, also referred to as juvenile pilocytic astrocytoma, is the most frequent tumour of the optic nerve in childhood.\nIt is a developmental hamartoma.\nIt is either stationary or only slowly progressive.\nTumour may arise in any portion of the nerve →\n\n\nIntraorbital,\nIntracanalicular\nIntracranial', 'role': 'assistant'}]