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': 'Treatment of chronic dacrocystitis: \nSelect and explain. \nA. Dacrocystorhinostomy, B. Antibiotics, C. Probing/Syringing, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A i.e. Dacrocystorhinostomy; B i.e. Antibiotics; C.ie Probing Congenital dacryocystitis is almost always chronic Q, while acquired may be acute or chronic (chronic being more common). It is treated by massage over lacrimal sac, lacrimal syringing with antibiotics, probing of nasolacriinal duct, antibiotic drops and surgery (dacryocustorhinostomy, dacryocystectomy, conjunctivocystorhinostomy) Q', 'role': 'assistant'}]