IBT 阅读习题 He refused to develop projection technology,reasoni

IBT 阅读习题
He refused to develop projection technology,reasoning that if he made and sold projectors,then exhibitors would purchase only one machine-a projector-from him instead of several.
Which of the sentences below best expresses the essential information in the highlighted sentence from the passage?
Incorrect answer choices change the meaning in important ways or leave out essential information.
○Edison was more interested in developing a variety of machines than in developing a technology based on only one.
○Edison refused to work on projection technology because he did not think exhibitors would replace their projectors with newer machines.
○Edison did not want to develop projection technology because it limited the number of machines he could sell.
○Edison would not develop projection technology unless exhibitors agreed to purchase more than one projector from him.
C 这道题为什么选C 我觉的选D reasoning that if he made and sold projectors,then exhibitors would purchase only one machine-a projector-from him instead of several.
He refused to develop projection technology,reasoning that if he made and sold projectors,then exhibitors would purchase only one machine-a projector-from him instead of several.
这句话的意思是 他拒绝发展投影仪这项技术，是因为如果他制作和卖投影仪，然后展览着只能从他那买一个机器而不是很多个？这意思不就是说展览着买少了吗

easoning that if he made and sold projectors,then exhibitors would purchase only one machine-a projector-from him instead of several.原因是他制造和销售投影仪,然后展示者就只从他那儿买1台机器了-一个投影仪-而不是很多个.
我觉得是选C啊,D是说除非展示者要在在他那儿买多于1台的投影仪才研发投影仪,C是说他不研发的原因是他卖出去的机器的数量有限
原文中的那个话不是说他要开发的条件,而是说他买出去的机器数量有限这个事实,鉴于这个事实,爱迪生就不研发投影仪了.而且也没有证据显示出说他有根exhibitors商量要多买就研发的事情.
你还没读懂啊,exhibitors买少了没错,可是反过来,并没有说买多了就研发,托福最忌讳反向逻辑,原文没提到,你用你的逻辑推测都是错的.既然你觉得D不对,那你对C答案有什么反驳吗?