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': 'Stocker&;s line is seen in - \nSelect and explain. \nA. Pinguencula, B. pterygium, C. Cngenital Ocular Melanosis, D. Conjunctival epithelial melanosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Image : stockers line in pterygium Reference : AK Khurana 7th edition page :89', 'role': 'assistant'}]