Which table represents a nonlinear function?
X 1
2 3 4
5
6
A
y 3 6 9 12 15 18
X 2 4 6
00
10 12
B
y 4 7 10 13 16 19
X -2 -1 0 1
2 3
C
у
4 2 1 1.5 0.5