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
Which of the following types of entropion is not known: 
Select and explain. 
A. Spastic entropion, B. Paralytic entropion, C. Cicatricial entropion, D. Involutional entropion
B: Paralytic entropion
Answer: B: Paralytic entropion 
Explanation: Ans. Paralytic entropion