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': "Sunflower type cataract is characteristically in – \nSelect and explain. \nA. Chalcosis, B. Diabetes, C. Stargardt's disease, D. Congenital syphilis", 'role': 'user'}, {'content': "Answer: A \nExplanation: Sunflower cataract is seen in Wilson's disease, chalcosis (copper deposition), penetrating trauma with retention of copper or its alloy.", 'role': 'assistant'}]