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
[{'content': 'Most common site of perforation of tympanic membrane in acute suppurative otitis media is: \nSelect and explain. \nA. Anterior superior quadrant, B. Anterior inferior quadrant, C. Posterior superior quadrant, D. Posterior inferior quadrant', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In acute suppurative otitis media, 85% of cases show a small perforation in antero-inferior quadrant of pars tensa. Perforations in this location were associated with smooth margins, good drainage of pus, and a orable clinical course. Hence this area is termed as "perforation zone". Only 15% of perforations occurred in other locations, most typically the posterior-superior quadrant.', 'role': 'assistant'}]