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 are features of trachoma except \nSelect and explain. \nA. Circumcorneal congestion, B. Follicle, C. Cicatrization, D. Keratitis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Trachoma is characterized by conjunctival congestion. It causes keratitis, cicatrization and follicle ciliary congestion,and corneal is not a feature of conjunctivitis refer :Khurana 6th edition page number 65', 'role': 'assistant'}]