GWD-TN24套题测试2的一道逻辑题

[size=14.399999618530273px]Studies in restaurants show that the tips left by customers who pay their bill in cash tend to be larger when the bill is presented on a tray that bears a creditcard logo. Consumer psychologists hypothesize that simply seeing a credit-card logo makes many creditcard holders willing to spend more because it reminds them that their spending power exceeds the cash they have immediately available.

Which of the following, if true, most strongly supports the psychologists’ interpretation of the studies?

• [size=14.399999618530273px]AThe effect noted in the studies is not limited to patrons who have credit cards.  
• [size=14.399999618530273px]BPatrons who are under fi nancial pressure from their credit-card obligations tend to tip less when presented with a restaurant bill on a tray with a credit-card logo than when the tray has no logo.  
• [size=14.399999618530273px]CIn virtually all of the cases in the studies, the patrons who paid bills in cash did not possess credit cards.  
• [size=14.399999618530273px]DIn general, restaurant patrons who pay their bills in cash leave larger tips than do those who pay by credit card.  
• [size=14.399999618530273px]EThe percentage of restaurant bills paid with a given brand of credit card increases when that credit card’s logo is displayed on the tray with which the bill is presented.  
• [size=14.399999618530273px]正确答案是B，但是我对E存疑，这道题的逻辑链很明确：前提：当账单上有信用卡logo的时候，用现金付款的顾客会留更多的消费
• [size=14.399999618530273px]                                                                              结论：心理学家推测这些信用卡的持有者单单是看到信用卡的logo就更乐意花费多一些，因为logo提醒他们他们的购买力超过了他们现在手头上能用的现金
• [size=14.399999618530273px]问加强。
• [size=14.399999618530273px]除了B选项，其他的选项也看以直接看出没有办法选择，但是个人感觉B选项有削弱的意味，因为原文说当信用卡持卡人看到logo就会多付钱，但是选项说的是当某部分人看到这个logo就会少付钱，这样不是有削弱的意味吗?求大牛解释~~