This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ocular Embryology& Anatomy, Subject name: Ophthalmology
[{'content': 'Not a feature at bih: \nSelect and explain. \nA. Anteroposterior diameter is 17 mm, B. Corneal diameter is lesser, C. Myelination of nerve fibres is till lamina cribrosa, D. Lens is biconcave in shape', 'role': 'user'}, {'content': 'Answer: D \nExplanation: AP diameter 17 mm Corneal diameter 10 mm Lens Lens is spherical in shape Infantile Nucleus present Optic Nerve - Upto Lamina cribrosa myelination', 'role': 'assistant'}]