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
[{'content': 'Nasolacrimal duct drains into: \nSelect and explain. \nA. Superior meatus, B. Ethmoidal bulla, C. Inferior meatus, D. Middle meatus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Key Concept:\n\n\xa0The inferior meatus lies underneath the inferior concha, and is the largest of the three meatuses.\xa0\n\xa0The nasolacrimal duct opens into it at the junction of its anterior one-third and posterior two-thirds.\xa0\n\xa0This opening is guarded by the lacrimal fold, or Hasner’s valve.', 'role': 'assistant'}]