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
[{'content': 'Tear production in child begins at \nSelect and explain. \nA. 4 weeks, B. 4 months, C. 6 months, D. 9 months', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) 4 weeks', 'role': 'assistant'}]