Toasty Treats sells its toasted potato chips in a resealable bag. An employee of a drugstore that retailed the chips opened some of the bags and laced the chips with arsenic. Five people died. The families sued Toasty Treats for product liability. They will most likely claim this is:

a. failure to warn

b. defect in manufacturing

c. none of these since the employee worked for the retailer and not Toasty Treats

d. a defect in packaging