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
Fixation reflex of eyes develop at 
Select and explain. 
A. 2 - 4 months, B. 4 - 5 months, C. 9 months, D. 6 - 8 months
B: 4 - 5 months
Answer: B: 4 - 5 months 
Explanation: Fixation reflex of eyes develop at 2 - 4 months.