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
Sunflower cataract is due to deposition of: 
Select and explain. 
A. Cu, B. Zn, C. Fe, D. Ca
A: Cu
Answer: A: Cu 
Explanation: Ans. A i.e. Cu Cataract Snowflake cataract: DM Rossette cataract: Trauma Christmas tree pattern: Myotonic dystrophy Sunflower cataract: Wilsons disease Oil drop cataract: Galactosemia