This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2018, Subject name: Ophthalmology
[{'content': 'In dacryocystorhinostomy (DCR), Lacrimal gland opens into: \nSelect and explain. \nA. Inferior meatus, B. Middle meatus, C. Supreme meatus, D. Superior meatus', 'role': 'user'}, {'content': "Answer: B \nExplanation: DCR - After 4 year of age- Fistula made between medial meatus & lacrimal sac Dacryocystitis- (1) Congenital dacryocystitis - Mostly due to membranous occlusion at near the valve of hasner- Watering develops after 7 days of bih followed by mucopurulent discharge Regurgitation test positive Rx - Massage over the lacrimal sac (4 times a day) | If not able to cured by 6 months of age Probing of NLD with bowman's probe (REPEATED AFTER AN INTERVAL OF 3-4 WEEKS) |Repeated probing fails Intubation with silicone tube (silicone tube should be kept in the NLD for about six months) |After 4 years of age DCR (2) Adult dacrocystitis-Rx of Choice is DCR", 'role': 'assistant'}]