Candy lane
amount (pounds) price ($)
1 8
2 16
3 24
4 32

the cost for fudge at sweet treats is represented by y = 4x, where y is the price paid in dollars for x pounds. the table shows the cost of a similar fudge that candy lane sells.

which is the difference in cost when purchasing 4 pounds of fudge from each store?
a) $16
b) $24
c) $32
d) $8