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': 'The lens fibres meet around the Y-shaped sutures in which pa of nucleus of the crystalline lens: \nSelect and explain. \nA. Embryonic nucleus, B. Fetal nucleus, C. Infantile nucleus, D. All of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Embryonic nucleus', 'role': 'assistant'}]