In designing a general serviee faeility, espaeity should be such that the target rate of service utilization $($p$),$ in order to get the best general$-$purpose design, should beA between $0\mathrm{.}9(90\%)$ and $1,0(100\%)$ so that the utilization of the system is ideal.Bless than $0\mathrm{.}6($or $60\%),$ so that your system would be within the zone of service with maximum possible utilization within that.Cmore than $1\mathrm{.}0(100\%)$ so that the servers are fully utilized, even if the customers had to wait a little.Dumore than $0\mathrm{.}6($or $60\%)$ so that your system would have a good utilization.Eabout $0\mathrm{.}7(70\%)$ so that your system would be in the zone of service with maximum possible utilization within that.