This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
Nasolacrimal duct opens into 
Select and explain. 
A. Superior, B. Inferior meatus, C. Middle, D. Sphenoethmoid recess
B: Inferior meatus
Answer: B: Inferior meatus 
Explanation: Nasolacrimal duct begins at the lower end of the lacrimal sac, runs downwards, backward and laterally, opens into the inferior meatus the nose. Fold of mucous membrane called the valve of Hasner forms an imperfect valve at the lower end of the duct. Ref.BDC volume 3;sixth edition pg no 77