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': "All of the following are causes of posterior subcapsular cataract except - \nSelect and explain. \nA. Myotonic dystrophy, B. Wilson's Disease, C. Ionizing radiation, D. Congenital cataract", 'role': 'user'}, {'content': "Answer: D \nExplanation: Answer- D. Congenital cataractMyotoic dystrophyWilson's diseaseAtopic dermatitisCoicosteroidsTraumaGalactosemiaInfrared/heat cataract (glass-blower's or glass worker)", 'role': 'assistant'}]