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
[{'content': "All are corneal signs of Trachoma except - \nSelect and explain. \nA. Herbe follicles, B. Pannus, C. Opacity, D. Arlt's line", 'role': 'user'}, {'content': "Answer: D \nExplanation: Arlst's is a conjunctival sign (not corneal). Signs of Trachoma Conjunctival signs :- Congestion, conjunctival follicles (boiled sagograin like), Papillary hyperplasia, conjunctival scarring (Arlt's line), concretion. Corneal signs :- Superficial keratitis, Herbe follicles, Pannus, Corneal ulcer, Herbe pits, Corneal opacity. Ref: Parson 22nd/e p.172-174 & 21st/e p.172-174; Khurana 7th/e p.67 & 4th/e p.62-64", 'role': 'assistant'}]