Tiffany Smith Owns a Barbecue Restaurant

Multiple Choice

Tiffany Smith owns a barbecue restaurant. One expense that Tiffany watches closely is the cost of propane, which she uses to heat her ovens. The more barbecue food Tiffany sells, the more it costs her for propane on a monthly basis. For Tiffany, the cost of propane is a(n) :

A) variable cost
B) secondary cost
C) resultant cost
D) fixed cost
E) irregular cost