非常不理解为什么给的答案不是一个说明差异的<- ->，而是一个方向非常不明确的=>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 _____. 按时付工资
Y和Z的工人数一样（扔）
Y比Z负的总工资数多。
结论，Y的每小时工资多。 - Zortech spends a higher total sum per year than Yorco does to provide its hourly wage workers with benefits other than wages
- 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
- the proportion of all company employees who are hourly wage workers is significantly greater at Yorco than it is at Zortech
- 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
- the highest hourly wages paid at Yorco are higher than the highest hourly wages paid at Zortech
答案d | 
