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
Which of these features is a classic radiologic feature of optic nerve glioma: 
Select and explain. 
A. Tram-track appearance of optic nerve, B. Kingking of optic nerve, C. Multiple cystic spaces in optic nerve, D. Adjacent bony erosion
B: Kingking of optic nerve
Answer: B: Kingking of optic nerve 
Explanation: Ans. Kingking of optic nerve