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 layer of Retina continues as optic nerve 
Select and explain. 
A. Ganglionic cell layer, B. Nerve fibre layer, C. Internal limiting layer, D. External limiting layer
B: Nerve fibre layer
Answer: B: Nerve fibre layer 
Explanation: Nerve fibre layer continues as optic nerve.