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': 'When does the eye morphogenesis sta taking place? \nSelect and explain. \nA. 15 days, B. 22 Days, C. 49 days, D. 6 months', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ocular embryogenesis stas at 3 -4 weeks when optic groove appears.', 'role': 'assistant'}]