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': 'A true diabetic cataract is also known as: \nSelect and explain. \nA. Sunflower cataract, B. Rosette-shaped cataract, C. Snow-storm cataract, D. Coronary cataract', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Snow-storm cataract', 'role': 'assistant'}]