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
[{'content': 'What surgery is the treatment of choice in otosclerosis? \nSelect and explain. \nA. Stapedectomy, B. Stapes mobilization, C. Lemperfs Fenestration, D. Chemical labyrinthectomy', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Stapedectomy Surgery in otosclerosiso Surgical management is the treatment of choiceo Following surgeries are usedA) Stapedectomy with a placement of prosthesis: Here, complete stapes is removed and is replaced by a prosthesis. Traditionally it is considered as the treatment of choice.B) Stapedotomy: Here, a laser is used to make a hole in stapes to allow the placement of a prosthesis. It is now increasingly becoming the procedure of choice.C) Lemperts fenestration procedure: Fenestration of the lateral semicircular canal is done. It is reserved for cases where footplate cannot be mobilized during stapedectomy.D) Stapes mobilization: It can be tried in those cases only in which there is partial ankylosis of stapes footplate.", 'role': 'assistant'}]