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
Corneal transplantation: 
Select and explain. 
A. Donor >60 years not allowed, B. Whole eye preserved in culture, C. Specular microscopy done for corneal endothelial count, D. HLA matching required
C: Specular microscopy done for corneal endothelial count
Answer: C: Specular microscopy done for corneal endothelial count 
Explanation: Ans. Specular microscopy done for corneal endothelial count