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
[{'content': "Polychromatic luster type of cataract seen in - \nSelect and explain. \nA. Complicated cataract, B. Myotonic Dystrophy, C. Diabetes mellitus, D. Wilson's disease", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Complicated cataract o See above explanation", 'role': 'assistant'}]