Two relationships are described.

Relationship S: Karen drove 160 miles in 4 hours and then she dorve 80 miles in 2 hours.

Relationship T: Veron cooked 6 hamburgers in 10 min, and thenhe cooked 9 hamburgers in 15 min.

What statement is true about these relationships?

A.Neither relationship is a direct variation.
B.Both relationships are direct variation.
C.Only relationship S is a direct variation.
D.Only relationship T is a direct variation.