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 - Allergic and Granulomatous, Subject name: Ophthalmology
[{'content': 'Content of cobblestone in vernal conjunctivitis is? \nSelect and explain. \nA. Eosinophils, B. Basophills, C. Lymphocytes, D. Histiocytes', 'role': 'user'}, {'content': 'Answer: A \nExplanation: ANSWER: (A) EosinophilsREF: Inflammatory diseases of the conjunctiva by Thanh Hoang-Xuan, Christophe Baudouin, Catherine Creuzot-Garcher Page 54Vernal keratoconjunctivitis is characterized by giant papillae (diameter > 1 mm) on the superior tarsal conjunctiva, giving a cobblestone aspect. The papillae causing cobblestones in vernal keratoconjuctivitis have eosinophil', 'role': 'assistant'}]