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
Perforation of tympanic membrane with destruction of tymapnic annulus is called - 
Select and explain. 
A. Attic, B. Marginal, C. Subtotal, D. Total
B: Marginal
Answer: B: Marginal 
Explanation: None