This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Menier's Disease, Subject name: ENT
Chemical labyrinthectomy by transtympanic route is done in Meniere's disease using which drug- 
Select and explain. 
A. Amikacin, B. Gentamicin, C. Amoxycillin, D. Cyclosporine
B: Gentamicin
Answer: B: Gentamicin 
Explanation: Ans. is 'b' i.e., Gentamicin o Has been explained in previous sessions.