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
Defective function of which of the following causes hyperacusis 
Select and explain. 
A. 8th nerve, B. 7th nerve, C. Stapedius muscle, D. Any of the above
D: Any of the above
Answer: D: Any of the above 
Explanation: Paralysis of stapedius muscle which is supplied by 7th cranial nerve causes hyperacusis or phonophobia Ref: Dhingra 7e pg 510.