The available time for a work center is $160,$ of which $140$ hours are actually worked. The work center produces $180$ standard hours of work in a week. What are the utilization and efficiency parameters of the work center?

A$.$ Utilization $=87\mathrm{.}5\%,$ Efficiency $=129\%$

B$.$ Utilization $=129\%,$ Efficiency $=77\mathrm{.}8\%$

C$.$ Utilization $=77\mathrm{.}8\%,$ Efficiency $=129\%$

D$.$ Utilization $=129\mathrm{.}5\%,$ Efficiency $=87\mathrm{.}5\%$