A Bakery Supply Catalogue Sells Five-Pound Bags of Moist Apricots

A bakery supply catalogue sells five-pound bags of moist apricots and cranberries,sweet dates,bits of pineapple,and candied cherries to be used in fruitcakes.Each bag costs $24.95.
-Refer to Dried Fruits.Since the amount of cranberries purchased depends on how many bags of fruit are demanded,what is the cost of the cranberries?

A) a variable cost
B) a marginal contributor
C) a fixed cost
D) a variable revenue