Which statement below is accurate regarding the maxillary sinus?

Explanation

Option A is correct because the maxillary sinus drains into the nasal cavity through the middle meatus and nasal vestibule. Option B is true as the maxillary sinus is shaped like a four-sided pyramid. Option C is accurate since the main ostium is usually found in the posterior third of the hiatus semilunaris. Therefore, option D, which includes all these facts, is the correct choice.