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: Anatomy
Nasolacrimal duct drains into: 
Select and explain. 
A. Superior meatus, B. Ethmoidal bulla, C. Inferior meatus, D. Middle meatus
C: Inferior meatus
Answer: C: Inferior meatus 
Explanation: Key Concept:

 The inferior meatus lies underneath the inferior concha, and is the largest of the three meatuses. 
 The nasolacrimal duct opens into it at the junction of its anterior one-third and posterior two-thirds. 
 This opening is guarded by the lacrimal fold, or Hasner’s valve.