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: ENT
Ideal site for myringotomy and grommet inseion: 
Select and explain. 
A. Anterior superior quadrant, B. Anterior inferior quadrant, C. Posterior superior quadrant, D. Posterior inferior quadrant
B: Anterior inferior quadrant
Answer: B: Anterior inferior quadrant 
Explanation: Placement antero-inferiorly compared with placement postero-inferiorly lengthens the time a ventilation tube is in situ. To maximise the duration of potential tube function, the preferred inseion site is anteroinferior through a circmferential or radial incision.