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': "In pterygium, which layer of cornea is involved most often - \nSelect and explain. \nA. Epithelium, B. Endothelium, C. Bowman's layer, D. Descemet's membrane", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Pterygium is a growth from conjunctiva, In cornea, it involves Bowman&;s layer. Reference : Yanoff & Duker 3rd edition ,page :712', 'role': 'assistant'}]