This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Larynx, Subject name: ENT
Lever ratio is: 
Select and explain. 
A. 14:01, B. 1.3:1, C. 18:01, D. 1.5:1
B: 1.3:1
Answer: B: 1.3:1 
Explanation: (b) 1.3:1(Ref Cummings, 6th ed., 1996)The handle of malleus is 1.3 times longer than the long process of incus so that the lever ratio is 1.3:1.17:1 is the Areal ratio22 is the total transformer ratio of middle ear (Areal ratio x lever ratio)