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': 'Otosclerosis presents with? \nSelect and explain. \nA. Conductive deafness, B. Sensorineural deafness, C. Mixed hearing loss, D. Fluctuating hearing loss', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. (a) Conductive deafnessRef: Dhingra's 4th ed p-86, 400", 'role': 'assistant'}]