This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: ENT
[{'content': 'Regarding stapedial reflex which of the following is true: \nSelect and explain. \nA. It helps to enhance the sound conduction in middle ear, B. It is a protective reflex against loud sound, C. It helps in masking the sound waves, D. It is unilateral reflex', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (b) It is a protective reflex against loud sound(Ref. Cummings, 6th ed., 2055)Whenever there is a loud sound 70-100dB above the hearing threshold of a person, the Stapedial reflex gets activated and protects the inner ear from noise trauma. It is a bilateral reflex.', 'role': 'assistant'}]