Two pounds of dried cranberries call $5.04 , 3 pounds of dried cranberries cost $7.56, and 7 pounds of dried cranberries cost $17.64 . Which equation gives the total cost of y of x pounds of dried cranberries.

A. y=1.68x
B. y=2.52x
C. y=3.04x
D. y=5.04x