You are ringing up a customer using a large number of coupons. The next customer has two items and is clearly irritated. You don't typically call for backup when there's only one person waiting. What would you be most and least likely to do?

a. Call for backup so the customer with the small transaction doesn't have to continue to wait.
b. Let the customer with the small transaction know it won't be much longer.
c. Apologize to the customer for the wait. Let her know you'll get to her as quickly as possible.
d. Suggest that the customer check the pharmacy, as they may be able to help her more quickly.