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': 'Sclerosing otitis media is diagnosed by \nSelect and explain. \nA. Impedence audiometry, B. Pure tone audiometry, C. X-ray, D. Otoscopy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Otoscope is used to view any of the middle ear pathology like granulations, sclerosis, ossicular chain, adhesions. Ref: Dhingra 7e pg 78.', 'role': 'assistant'}]