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': 'The most characteristic eye lesion in diabetes is: \nSelect and explain. \nA. Flame haemorrhages, B. Papilledema, C. Capillary aneurysm, D. Cataracts', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Capillary aneurysm', 'role': 'assistant'}]