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': 'Myringoplasty is plastic repair of- \nSelect and explain. \nA. Middle ear, B. Internal ear, C. Eustachian tube, D. Tympanic membrane', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]