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': 'Tone decay test is used for \nSelect and explain. \nA. Meinneirs disease, B. Otosclerosis, C. Cochlear deafness, D. Sensory neural deafness', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Answer- D. Sensory neural deafnessThreshold tone decay test is used for retrocochlear type of SNHL.', 'role': 'assistant'}]