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
Ossicles of middle ear are responsible for which of the following ? 
Select and explain. 
A. Amplification of sound intensity, B. Reduction of sound intensity, C. Protecting the inner ear, D. Reduction of impedance to sound transmission
D: Reduction of impedance to sound transmission
Answer: D: Reduction of impedance to sound transmission 
Explanation: None