This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
Most common perforation site in tympanic membrane in ASOM: 
Select and explain. 
A. Antero-inferior, B. Postero-inferior, C. Antero-superior, D. Postero-superior
A: Antero-inferior
Answer: A: Antero-inferior 
Explanation: (a) Antero-inferior(Ref. Shambaugh, 6th ed., 437; Scott Brown, 8th ed., Vol 2; 147).However this answer is controversial as according to Shambaugh it is most commonly anteroinferior but Scott Brown says it is the posterior half of pars tensa.