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': "Congenital morgagnian cataract is a feature of: \nSelect and explain. \nA. Rubella cataract, B. Lowe's syndrome, C. Hereditory cataract, D. Galactosemic cataract", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Rubella cataract', 'role': 'assistant'}]