This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diagnostic and operative ENT, Subject name: ENT
Schwaz operation is also called as 
Select and explain. 
A. Coical mastoidectomy, B. Modified radical mastoidectomy, C. Radial mastoidectomy, D. Fenestration operation
A: Coical mastoidectomy
Answer: A: Coical mastoidectomy 
Explanation: Schwaz operation is also called as simple Mastoidectomy or coical Mastoidectomy Re: Textbook of Ear, Nose and Throat, Dhingra, 6th Edition