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
Osteomeatal complex refers to 
Select and explain. 
A. Maxillary ostium, ethmoid infundibulum, hiatus semilunaris and frontal recess, B. Frontal recess, inferior meatus, sphenoid sinus, C. Hiatus semiluna ris maxillary ostium, sphenoeth moid recess, D. None of the given options
A: Maxillary ostium, ethmoid infundibulum, hiatus semilunaris and frontal recess
Answer: A: Maxillary ostium, ethmoid infundibulum, hiatus semilunaris and frontal recess 
Explanation: The osteomeatal complex (or unit), sometimes less correctly spelled as osteomeatal complex, is a common channel that links the frontal sinus, anterior and middle ethmoid sinuses and the maxillary sinus to the middle meatus that allows air flow and mucociliary drainage. <img src=" /> ref - researchgate.net