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
[{'content': "Location of Arlt's line: \nSelect and explain. \nA. Sclera, B. Lens, C. Lower palpebral conjunctiva, D. Upper palpebral conjunctiva", 'role': 'user'}, {'content': 'Answer: D \nExplanation: 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.', 'role': 'assistant'}]