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
A 3 month old infant was brought with complaints of profuse lacrimation. On pressure pus exudes from the puncta. The best line of management is: 
Select and explain. 
A. Dacryocystorhinostomy, B. Syringing, C. Massaging of sac with antibiotics, D. Syringing and probing
D: Syringing and probing
Answer: D: Syringing and probing 
Explanation: Ans. Syringing and probing