This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lacrimal Gland, Subject name: Ophthalmology
Tear production in child begins at 
Select and explain. 
A. 4 weeks, B. 4 months, C. 6 months, D. 9 months
A: 4 weeks
Answer: A: 4 weeks 
Explanation: Ans. (a) 4 weeks