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': "Conducting hearing loss with intact tympanic membrane ? \nSelect and explain. \nA. Presbycausis, B. Meniere's disease, C. Glue ear, D. Acoustic neuroma", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Glue ear Among the given options, only glue ear (serous otitis media) is a cause of conductive deafness.", 'role': 'assistant'}]