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': 'Type of cataract in chalicosis is - \nSelect and explain. \nA. Sunflower cataract, B. Blue dot Cataract, C. Snowflake cataract, D. Polychromaticlustre', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]