Which of the following is an example of a promotion strategy that uses postpurchase communication?

Group of answer choices

A. A chartered accountant firm offering a 20 percent discount to all customers who avail its services in January

B. A hotel sending an email survey to its guests asking them to rate the quality of service they received

C. An airline hiring an actor to act in a series of commercials endorsing the airline's services

D. An insurance company using an umbrella as its logo to convey that its customers are well-protected