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': 'Lens develops from \nSelect and explain. \nA. Neuroectoderm, B. Surface ectoderm, C. Mesoderm, D. Neural crest', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]