This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Conjunctiva, Subject name: Ophthalmology
Arlts line is seen in 
Select and explain. 
A. Vernal keratoconjunctis, B. Pterygium, C. Ocular pemphigoid, D. Trachoma
D: Trachoma
Answer: D: Trachoma 
Explanation: Arlts line is a linear scarring on the upper palpebral conjunctiva in patients of trachoma REF:Refer Khurana 6th edition page number 69