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: Pathology
[{'content': "Sunflower cataract is seen \nSelect and explain. \nA. Blunt trauma, B. Williams disease, C. Wilson's disease, D. Myotonic dystrophy", 'role': 'user'}, {'content': "Answer: C \nExplanation: Sunflower cataract is seen in Wilson's disease.\nIt is considered as a second opthalmic sign of Wilson's disease after KF ring.", 'role': 'assistant'}]