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
Congenital anomalies of the optic disc include all except: 
Select and explain. 
A. Coloboma, B. Drusen, C. Hypoplasia, D. Medullated nerve fibres
D: Medullated nerve fibres
Answer: D: Medullated nerve fibres 
Explanation: Ans. Medullated nerve fibres