Which table shows a proportional relationship?
A. table aIn column 1, x is 1 and y is 2.
In column 2, x is 3 and y is 4.
In column 3, x is 4 and y is 6.
In column 4, x is 6 and y is 7.
B. table bIn column 1, x is 1 and y is negative 2. In column 2, x is 2 and y is 0. In column 3, x is 5 and y is 6. In column 4, x is 8 and y is 12.
C. table cIn column 1, x is 2 and y is negative 4.
In column 2, x is 3 and y is negative 6.
In column 3, x is 5 and y is negative 10.
In column 4, x is 6 and y is negative 12.
D. table DIn column 1, x is 2 and y is 2.
In column 2, x is 4 and y is 3.
In column 3, x is 6 and y is 4.
In column 4, x is 8 and y is 5.