$\text{FAST FOOD MINI CASE:}$ Speedy Taco Is a Tex-Mex Fast Food Chain That Keeps

$\text{FAST FOOD MINI CASE:}$ Speedy Taco is a tex-mex fast food chain that keeps costs down by only serving its food through drive-through windows. In response to increasing concern about obesity in America, Speedy Taco introduced the Speedy Chicken, a grilled chicken taco, as a healthy alternative to its tasty all-beef Speedy Taco. In addition to chicken and beef tacos, Speedy's menu also includes Speedy Burritos and Speedy Mexican Pizzas. Hoping to capitalize on the popularity of the Speedy brand, Continental Foods pays a fee to Speedy Taco in return for the ability to put the Speedy name on its line of salsa and tortilla chips sold to consumers through grocery stores. To entice consumers to try its salsa and chips, Continental Foods set up sampling booths at the front of the chip-and-dip aisles at grocery stores nationwide. Consumers that sampled the chips and salsa were given coupons toward the purchase of Continental Foods' Speedy Salsa and Speedy Tortilla Chips. Continental also printed a discount coupon for salsa on the back of every bag of tortilla chips.
-In the FAST FOOD MINI CASE, by printing a coupon on the back of every bag of tortilla chips, Continental foods is reinforcing consumer purchases on a(n) ________ schedule.

A) fixed
B) continuous
C) variable
D) random
E) iterative