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
Treatment of choice in deafness associated with attico-antral perforation is 
Select and explain. 
A. Simple mastoidectomy, B. Modified radical mastoidectomy, C. Wait and watch, D. Instillation of antibiotic drops
B: Modified radical mastoidectomy
Answer: B: Modified radical mastoidectomy 
Explanation: Modified radical mastoidectomy, whereas much of the hearing mechanism as possible is preserved. The disease process which is often localised to the attic and antrum is removed and the whole area fully exteriorised into the meatus by removal of the posterior meatal and lateral attic wall. Indications1. Cholesteatoma confined to the attic and antrum.2. Localised chronic otitis media. (Ref: Textbook of ENT, PL Dhingra, 7th edition, pg no. 461)