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': "Arlt's line are usually seen in: \nSelect and explain. \nA. Ocular pemphigoid, B. Trachoma, C. Vernal keratoconjunctivitis, D. Pterygium", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Cicatricial trachoma linear scars may be seen in the sulcus subtarsalis, these are called Arlt\'slines. Since its caused by Chlamydia trachomatis the antibiotic of choice is azithromycin. Ref: A.K KHURANA (2005), Chapter 4, "Disease of The Conjunctiva", In the book, "Opthalmology", 3rd Edition, Newdelhi, Page 90', 'role': 'assistant'}]