This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
[{'content': 'Most common benign tumour of eye lids \nSelect and explain. \nA. Simple papilloma, B. Xanthelasma, C. Capillary haemangioma, D. Neurofibroma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Simple Papilloma\nUsually ocurs at lid margin\nmost common tumour.', 'role': 'assistant'}]