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: Unknown
[{'content': 'All are mechanisms of bone conduction except: \nSelect and explain. \nA. Vibrations of air column of the EAC, B. Vibrational inertia of ossicles, C. Vibration of the inner ear, D. Air conduction through the Tympanic Membrane', 'role': 'user'}, {'content': 'Answer: D \nExplanation: This is a method of air conduction, the other 3 are the mechanisms of bone conduction', 'role': 'assistant'}]