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': 'Nerve involved in hyperacusis \nSelect and explain. \nA. Facial nerve, B. Glossopharyngeal, C. Vagus, D. Hypoglossal', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Paralysis of stapedius muscle which is supplied by 7th cranial nerve causes hyperacusis or phonophobia Ref: Dhingra 7e pg 510.', 'role': 'assistant'}]