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 clinical variety of scieritis associated with collagen diseases is: 
Select and explain. 
A. Necrotizing nodular scleritis, B. Non-necrotizing nodular scleritis, C. Scleromalacia perforans, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Ans. All of the above