This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diseases of orbit, Lids and lacrimal apparatus, Subject name: Ophthalmology
Dacrocytorhinostomy involves- 
Select and explain. 
A. Opening up the terminal blocked end of nasolacrimal duct, B. Connecting the lacrimal sac to nose by breaking the medial wall, C. Complete excision of lacrimal, D. Inseion of drainage tube in the lacrimal sac
B: Connecting the lacrimal sac to nose by breaking the medial wall
Answer: B: Connecting the lacrimal sac to nose by breaking the medial wall 
Explanation: Connecting the lacrimal sac to nose by breaking the medial wall </p> Ref.ak khurana 6th edition pg no 396