[逻辑小分队] GWD5的一道逻辑 小题

Asignificant number of complex repair jobs carried out by Ace Repairs have to bereworked under the company’s warranty. The reworked jobs are invariably satisfactory.  When initial repairs are inadequate,therefore, it is not because the mechanics lack competence; rather, there isclearly a level of focused concentration that complex repairs require that iselicited more reliably by rework jobs than by first-time jobs.

Theargument above assumes which of the following?

A.   There is no systematic difference inmembership between the group of mechanics who do first-time jobs and the groupof those who do rework jobs.

B.   There is no company that successfullycompetes with Ace Repairs for complex repair jobs.

C.   Ace Repairs’ warranty is good on first-timejobs but does not cover rework jobs.

D.   Ace Repairs does not in any way penalizemechanics who have worked on complex repair jobs that later had to be reworked.

E.    There is no category of repair jobs in whichAce Repairs invariably carries out first-time jobs satisfactorily.

这道题我只读懂了题，题目说初次维修不足，二次维修很好的原因不是因为技工们技术不行，而是因为都寄希望于二次维修是完善的可以全方位的检修各种东西，所以初次维修的技工就不怎么用心了

但是呢，这5个选项我怎么觉得任何一个都没啥管理呢？ 有哪位达人能解释一下吗？谢谢