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 seen in: \nSelect and explain. \nA. Chalcosis, B. Diabetes, C. Stragardt's disease, D. Congenital syphilis", 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Chalcosis', 'role': 'assistant'}]