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
In dacryocystorhinostomy operation the communication of the sac is established with: 
Select and explain. 
A. Middle meatus, B. Superior meatus, C. Inferior meatus, D. All of the above
A: Middle meatus
Answer: A: Middle meatus 
Explanation: Ans. Middle meatus