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 is/are caused by trachoma: 
Select and explain. 
A. Entropion, B. Ectropion, C. Pinguecula, D. All
A: Entropion
Answer: A: Entropion 
Explanation: A. i.e. Entropion