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
When does the eye morphogenesis sta taking place? 
Select and explain. 
A. 15 days, B. 22 Days, C. 49 days, D. 6 months
B: 22 Days
Answer: B: 22 Days 
Explanation: Ocular embryogenesis stas at 3 -4 weeks when optic groove appears.