请教cxd GMAT 逻辑推理 的假设里的一题

在Page 62页 第 57 题

One sure way you can tell how quickly a new idea ，for example, the idea of "privatization" is taking hold among the population is to monitor how fast the word or words expressing that particular idea are passing into common usage. Professional opinions of whether or not words can indeed be said to have passed into common usage are available from dictionary editors, who are vitally concerned with this question.

　　The method described above for determining how quickly a new idea is taking hold relies on which one of the following assumptions？

　　（A） Dictionary editors are not professionally interested in words that are only rarely used.

　　（B） Dictionary editors have exact numerical criteria for telling when a word has passed into common usage.

　　（C） For a new idea to take hold, dictionary editors have to include the relevant word or words in their dictionaries.

　　（D） As a word passes into common usages, its meaning does not undergo any severe distortions in the process.

　　（E） Words denoting new ideas tend to be used before the ideas denoted are understood.

解析里面说道，由题意可知，代表某个新概念的单词或短语在转变为习惯用法时，若单词的意思发生了较大的改变，那么这个单词将不在表达他们以前所表达的新概念.

本人阅读能力有限，怎么也不能从题意中得出这个意思。有哪位NN帮忙解析一下吗？