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
Avascular coat in eye is: 
Select and explain. 
A. Sclera, B. Cornea, C. Retina, D. Choroid
B: Cornea
Answer: B: Cornea 
Explanation: Ans. Cornea