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
Chemical labyrinthectomy by transtympanic route is done in Meniere's disease using which drug? 
Select and explain. 
A. Amikacin, B. Gentamicin, C. Amoxicillin, D. Cyclosporine
B: Gentamicin
Answer: B: Gentamicin 
Explanation: Chemical labyrinthectomy in Meniere&;s disease is done using Gentamicin locallyRef: PL Dhingra, Diseases of Ear, Nose & Throat, 7th edition, pg no. 115