This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inflammations of Conjunctiva - Infective, Subject name: Ophthalmology
Location of Arlt's line: 
Select and explain. 
A. Sclera, B. Lens, C. Lower palpebral conjunctiva, D. Upper palpebral conjunctiva
D: Upper palpebral conjunctiva
Answer: D: Upper palpebral conjunctiva 
Explanation: Ans. (d) Upper palpebral conjunctivaRef: A.K. Khurana 6th ed. 169* Conjuctival scarring seen in trachoma as irregular stellate shaped scars over sulcus subtarsalis is called Arlts line.* It is seen in upper palpebral conjunctiva.