Which of the following is a nonlinear function?
A.
Input 1 2 3 4 5
Output 4 8 12 16 20

B.
Input 1 2 3 4 5
Output 4 10 16 22 28

C.
Input 1 2 3 4 5
Output 4 12 20 28 36

D.
Input 1 2 3 4 5
Output 4 16 64 256 1,024