This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Ophthalmology
[{'content': 'Typical appearance of diabetic cataract is \nSelect and explain. \nA. Blue dot cataract, B. Post capsular cataract, C. Snow flake opacities, D. Sunflower cataract', 'role': 'user'}, {'content': 'Answer: C \nExplanation: .', 'role': 'assistant'}]