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: Ophthalmology
Most common type of optic nerve glioma is – 
Select and explain. 
A. Gemistocytic, B. Fibrous, C. Protoplasmic, D. Pilocytic
D: Pilocytic
Answer: D: Pilocytic 
Explanation: Most common type of optic nerve glioma is juvenile pilocytic astrocytoma.