请教一道GWD逻辑题

exult1982

With a record number of new companies starting up in Derderia and with previously established companies adding many jobs, a record number of new jobs were created last year in the Derderian economy. This year, previously established companies will not be adding as many new jobs overall as such companies added last year. Therefore, unless a record number of companies start up this year, Derderia will not break its record for new jobs created. Which of the following is an assumption on which the argument relies?

(A) Each year, new companies starting up create more new jobs overall than do
previously established companies.
(B) Companies established last year will not add a greater number of jobs overall this year than they did last year.
(C) This year, the new companies starting up will not provide substantially more jobs per company than did new companies last year.
(D) This year, the overall number of jobs created by previously established companies will be less than the overall number of jobs lost at those companies.
(E) The number of jobs created in the Derderian economy last year was substantially larger than the number of jobs lost last year.

答案选E，我选B，但觉得好像没有一个那么有说服力的
对于E，说到jobs lost last year，这个在原文中根本没出现过，实在想不明白这个推理是怎样加强的。
谢谢NN指教

山贼的头头

这一题我怎么搜的答案是C啊。B肯定不对，结论是通过new企业来支持结论的。已经把old的排除了。DE提到了失业。应该是无关选项