Which of the following tables represents a proportional relationship?

A.

x 0 1 2 3
y 0 4 5 6
B.

x 0 2 4 6
y 2 4 8 12
C.

x 0 1 2 3
y 0 3 6 9
D.

x 0 5 10 15
y 0 10 15 20

B.

In table B, as the value of x doubles, the value of y also doubles, indicating a proportional relationship.