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 other name of ? 
Select and explain. 
A. Chalazion, B. Hordeolum internum, C. Hordeolum externum, D. None of the above
C: Hordeolum externum
Answer: C: Hordeolum externum 
Explanation: Ans. is 'c' i.e., Hordeolum externum