题目选项分析

Which of the following best completes the passage below?

Consumer perceptions that mail-in rebates, a sales practice in which a retailer reimburses customers for a portion of a product’s price at a later date, constitute significant savings are substantially skewed. Most of the rebates offered are never redeemed. Thus, the benefit to consumers on the whole is quite small, because _______.

【选项】

many of the retailers who advertise rebates never follow through on fulfilling them