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 cataract is seen in ? \nSelect and explain. \nA. Wilson's disease, B. Congenital rubella, C. Blunt trauma to eye, D. Myotonicdystrophica", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Wilson's disease", 'role': 'assistant'}]