求助一道ZT

昨天一位朋友提供了一道所谓的真题，请大家讨论一下答案

Finding of a survey of Systems magazine subscribers:  Thirty percent of all merchandise orders placed by subscribers in response to advertisements in the magazine last year were placed by subscribers under age thirty-five.

Finding of a survey of advertisers in Systems magazine:  Most of the merchandise orders placed in response to advertisements in Systems last year were placed by people under age thirty-five.

For both of the findings to be accurate, which of the following must be true?

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More subscribers to Systems who have never ordered merchandise in response to advertisements in the magazine are age thirty-five or over than are under age thirty-five.

Among subscribers to Systems, the proportion who are under age thirty-five was considerably lower last year than it is now.

Most merchandise orders placed in response to advertisements in Systems last year were placed by Systems subscribers over age thirty-five.

这是我考试的时候遇到的题，当场就晕了。。。

竟然在这里遇上。。。

又看了一遍，我选E

这道题我读了若干遍，到现在连题干还没有完全搞明白，更别说选项了，555555

这个题实际上主要是解释两者的差距：

（1）Most of the merchandise orders （等于大于50%）

（2）Thirty percent of all merchandise orders

虽然我开始题干也看得似懂非懂，但是，还是决定选E.然后仔细想了，E应该是对的。

这道题好像在哪里见过。

Finding of a survey of Systems magazine subscribers:  Thirty percent of all merchandise orders placed by subscribers in response to advertisements in the magazine last year were placed by subscribers under age thirty-five.

对Systems杂志的订阅者的调查发现：30%对该杂志上广告有反应（既买这些广告商产品）的是35岁以下的。 （既70%的买登载在该杂志上广告商产品的人是35岁以上的，但是要注意的是偶们并不知道这70%的人是看了这个杂志以后呢，还是没看，而从其他渠道知道这些产品的）

Finding of a survey of advertisers in Systems magazine:  Most of the merchandise orders placed in response to advertisements in Systems last year were placed by people under age thirty-five.

对在S杂志上刊登广告的广告商的调查：看了S杂志广告后购买这些广告商产品的人大多数是35岁以下的人。

上面所述都正确地话，既说明那些35岁以上的购买产品的人都是从其他渠道，也就是说不是通过看Systems杂志后买产品的。所以就是E.不知道有没有解释清楚...请指教

同意E