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': 'Giant papillary conjunctivitis is seen \nSelect and explain. \nA. Trachoma, B. Contact lens, C. Phlytenular conjunctivitis, D. Vernal kerato conjunctivitis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: It is the inflammation of conjunctiva with formation of very large sized papillae. Etiology :It is a localised allergic response to a physically rough or deposited surface (contact lens, prosthesis, left out nylon sutures). Probably it is a sensitivity reaction to components of the plastic leached out by the action of tears. ref: A K KHURANA OPHTALMOLOGY,E4, Page-77', 'role': 'assistant'}]