题目选项分析

Hoping to increase his company's market share, the CEO of QuikFashion has decided to hold a month-long sale in which all of the clothing in QuikFashion's stores will be discounted by at least 50 percent. Although this discount will mean that the company is selling clothing at cost, the CEO hopes that this broadly advertised sale will attract repeat buyers to QuikFashion, who will return to buy clothing at full price after the month of sales.

In assessing the CEO's ability to achieve his goals with this plan, it would be most useful to know which of the following?

【选项】Whether a sale lasting a different length of time would prove more profitable in the long run.