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
[{'content': 'Which of the following types of entropion is not known: \nSelect and explain. \nA. Spastic entropion, B. Paralytic entropion, C. Cicatricial entropion, D. Involutional entropion', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Paralytic entropion', 'role': 'assistant'}]