A clothing store buys a box of hats for $124.00 and resells them for $12.00 per hat If h represents the number of hats in a box, which of the following expressions could be used to find the difference between the selling price and the cost of box hats?
a. 124h + 12
b. 12h + 124
c. 124h - 12
d. 12h - 124