This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Acquired Cataract, Subject name: Ophthalmology
Sunflower cataract is seen in: 
Select and explain. 
A. Blunt trauma, B. Diabetes, C. Chalcosis, D. Argyriosis
C: Chalcosis
Answer: C: Chalcosis 
Explanation: Ans: C (Chalcosis) Ref Parson's Diseases of the Eye 22nd edition pg.25H 259Explanation:CauseType of cataractDiabetesSnow flake cataractMyotonic dystrophyChristmas tree cataractGalactosemiaOil droplet cataractAlport syndromeAnterior polar cataractAtopic dermatitisShield cataractTraumatic cataractRosette cataractComplicated cataractPosterior subcapsularcataract with bread crumb appearance and polychromatic lusterSteroid inducedPSCC - discoidChalcosis/ copperSunflower cataractSiderosis/ironBrown discoloration