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
[{'content': 'Initial treatment of congenital dacryocystitis - \nSelect and explain. \nA. Massaging, B. Probing, C. D C R, D. Ointment', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Immediate treatment (at 7 days of life) of congenital dacryocystitis is massage over the lacrimal sac. It cures obstruction in 90% of infants.', 'role': 'assistant'}]