This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lens, Subject name: Ophthalmology
[{'content': 'The following statement about ocular effects of congenital rubella syndrome is false \nSelect and explain. \nA. Myopia is common, B. Lamellar cataract is not most common, C. Ocular defect typically occurs with infection in the first trimester, D. It can cause salt and pepper fundus', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. (a) Myopia is commonRef: Ghai pediatrics, p. 206Option a - CRS is associated with Micro-ophthalmia, thus causing Hypermetropia due to decreased axial lengthOption b - Lamellar cataract is found in CRS. Nuclear cataract is most common.Option c - Risk to the fetus closely related to the stage of gestation at the time of maternal infection, about 50% during first 8 weeks, 10% between 13 and 24 weeksOption d - It causes 'non-progressive' salt and pepper fundus.", 'role': 'assistant'}]