Advertisers Have Three Habit-Related Goals

Advertisers have three habit-related goals.Which of the following promotions is intended to help the advertiser meet the goal of habit reinforcement?

A) For every ten cups of coffee you purchase at a local convenience store, you get one free.
B) A sales clerk gives out free samples of chili at the supermarket.
C) Al sees a comparative ad showing the superiority of one beer over another beer.
D) A vacuum cleaner salesperson offers to clean the living room carpet of the Knighten household.
E) The advertiser may offer incentives to lure customers away from old brands.