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
In otosclerosis during stapes surgery prosthesis used is: 
Select and explain. 
A. Teflon piston, B. Grommet, C. Total ossiculear replacement, D. All of the above
A: Teflon piston
Answer: A: Teflon piston 
Explanation: Ans. is a i.e. Teflon piston The currently used prosthesis in otosclerosis surgery are: Teflon (M/C used) Stainless steel Platinum -- All are MRI compatible Gold Titanium The prosthesis is placed between the long process of incus and foot plate of stapes