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
[{'content': 'Following operations are done in case of otosclerosis: \nSelect and explain. \nA. Stapedectomy, B. Fenestration, C. Stapedotomy, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Role of surgery in a case of otosclerosisSurgeryformsthe mainstay of management in a case of otosclerosis(Surgery of choice)|Stapedectoy / stapedotmy(surgery oh choice) Lempes fenestration procedure|Fenestration of the lateral semicircular canal is done. It is reserved for cases where footplate cannot be mobilized during stapedectomy(Outdated nowadays) Stapes mobilization|It is done in those cases only in wbichthere is paial ankylosis of footplate of stapes althoughreankylosis tends to develop a although reankylosis tends to develop', 'role': 'assistant'}]