This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy, Development and clinical examination, Subject name: Ophthalmology
[{'content': '"Ferry line" is found in \nSelect and explain. \nA. Head of Pterygium, B. Base of keratoconus, C. Sclera, D. Eyelid', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ferry line is found in sclera Ferry&;s Li Reference: AK Khurana 7th edition', 'role': 'assistant'}]