prep 1-150

The computer company has announced that it will purchase the color-printing division of a rival company for $950 million, which is part of a deal that will make it the largest manufacturer in the office color-printing market,
                    

A) million, which is part of a deal that will make

B) million, a part of a deal that makes

C) million, part of a deal making

D) million as a part of a deal to make

E) million as part of a deal that will make

答案选择E~~~

我不明白的地方是为什么c中的part of a deal不可以作同位语~~

同位语的结构中不是有一种是一个概括性的词来概括前面的句子的内容吗？为什么这里part of a deal不能用来概括前面it will purchase...for 950 million的这个句子呢？

我尝试回答以下

part of a deal是形容词性质的，不是名词性质的

eg. I am a girl, bad.就比较奇怪。

第2，that it will purchase也表示了deal还没发生