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
The histology of pterygium includes: 
Select and explain. 
A. Elastotic degeneration, B. Epithelial inclusion bodies, C. Precancerous changes, D. Squamous metaplasia of the epithelium
A: Elastotic degeneration
Answer: A: Elastotic degeneration 
Explanation: Ans. Elastotic degeneration