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
Stye is an acute suppurative inflammation of: 
Select and explain. 
A. Gland of Zeis, B. Gland of Moll, C. Meibomian gland, D. All of the above
A: Gland of Zeis
Answer: A: Gland of Zeis 
Explanation: Ans. Gland of Zeis