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
Perforation of a part of tympanic membrane with destruction of tympanic annulus is called: 
Select and explain. 
A. Attic, B. Marginal, C. Subtotal, D. Total
B: Marginal
Answer: B: Marginal 
Explanation: (b) Marginal(Ref. Scott Brown, 8th ed. Vol 2; 989)Perforation of a part of pars tensa with destruction of tympanic annulus is called marginal perforation.Attic perforation is perforation of the pars flaccida.Subtotal perforation is a perforation when a small margin of pars tensa all around is still there.Total perforation is perforation of whole of the pars tensa along with its annulus.