【单选题】

It is wise to remember that you do not have to buy anything from any salesperson. You ought to buy only those things you really need or want and can (76) . Try not to let your personal feelings about the salesperson (77) you to make a purchase. Remember that your are entitled to ask a salesperson any question you wish (78) the product or service, and you are entitled to get a clear, complete (79) . You can tell the salesperson you want to think about the matter for a few days, (80) that want to talk to other people who have purchased the product or service. You can walk (81) from a salesperson without a polite end to the conversation. If a salesperson telephones you, you do not have to listen to the person’s entire "lecture" or respond to it in a friendly way. You can simply (82) the telephone without saying anything.

There are, of course, many salespeople who are genuinely interested in assisting you and in (83) your reasonable products and prices. If you are in (84) about the wisdom of a particular purchase, you might want to (85) another person who has had experience with the product or the service that interests you. If you receive unwanted goods in the mail, you are not obligated to pay for it.
A．promote
B．stop
C．affect
D．influence