were trainec$-$ The efficiency of this system is approximately and its utilization is approximately

A$.950$ employees; $850$ employees

B$.89\mathrm{.}5$ percent; $70\mathrm{.}8$ percent

C$.79\mathrm{.}2$ percent; $90\mathrm{.}5$ percent $*$

D$.87\mathrm{.}5$ percent, $950$ employees

E$.90\mathrm{.}5$ percent; $79\mathrm{.}2$ percent