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': 'Pterygium is \nSelect and explain. \nA. An inflammatory response, B. A connective tissue disorder, C. An infection, D. Assosciated with vitamin A deficiency', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pterygium is subconjuctival fibrobasvular growth encroaching on the cornea REF:Refer Khurana 6th edition page number 87', 'role': 'assistant'}]