This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
Refractive index of cornea is 
Select and explain. 
A. 1.37, B. 1.33, C. 1.42, D. 1.45
A: 1.37
Answer: A: 1.37 
Explanation: Corneal refractive index is 1.376