迷惑不解!GWD-2-Q18

Q18:

Which of the following most logically completes the argument?

Yorco and Zortech are two corporations that employ large numbers of full-time workers who are paid by the hour.  Publicly available records indicate that Yorco employs roughly the same number of such hourly wage workers as Zortech does but spends a far higher total sum per year on wages for such workers.  Therefore, hourly wages must be higher, on average, at Yorco than at Zortech, since _____.

1. Zortech spends a higher total sum per year than Yorco does to provide its hourly wage workers with benefits other than wages
2. the work performed by hourly wage workers at Zortech does not require a significantly higher level of skill than the work performed by hourly wage workers at Yorco does
3. the proportion of all company employees who are hourly wage workers is significantly greater at Yorco than it is at Zortech
4. overtime work, which is paid at a substantially higher rate than work done during the regular work week, is rare at both Yorco and Zortech
5. the highest hourly wages paid at Yorco are higher than the highest hourly wages paid at Zortech

为什么选D啊!我想的答案应该是OVERTIME WORK 在Z很RARE在Y不一定RARE.但是两者都给予了否定,这怎么是好啊?

是不是就是说,因为题目里说的是相同员工数的前提下，Y开销>Z开销，从而得出Y公司的工资>Z公司的工资的结论。。。如果有了加班这回事儿，比如Y公司整天加班，要给加班工资，那开销当然是大咯~~所以说，要能够公平的比较，必须要排除加班才行。。。用题目里的话说，就是两个公司都没什么加班的现象。。。。。我是新人，要是说错了多多包涵。。。。- -

只有两种情况Y付总工资高于Z:

1.OVERTIME多(OVERTIME要付出1.5或明或2倍工资)

2.总工作时间多.

D排除第一种情况(都一样很少).所以答案就是第二种情况.