This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Orbit, Subject name: Anatomy
Retina is part of - 
Select and explain. 
A. CNS, B. PNA, C. ANS, D. None
A: CNS
Answer: A: CNS 
Explanation: Ans. is 'a' i.e., CNS {Ref: I. B.Singh 8th/e p. 308]o Retina is a part of CNS and develops from Neuroectoderm.