We will offer you a 20 percent discount if you are among the first fifteen customers of the day.
【正确答案】
B
【答案解析】解答本题的关键在于正确把握20 percent discount和the first fifteen customers的意思。20 percent discount可以译成“20%的优惠”或者“打8折”,the first fifteen customers意为“前15位顾客”。