In an $\frac{M}{M}\frac{?}{3}$ queuing system with $c=3$ servers, if the utilization $(?)$ is $0\mathrm{.}75$ and the average number of customers waiting in the queue $(Lq)$ is $2,$ calculate the artival rate $(7).$ Then, determine the average time a customer spends in the system $($W$).$ What is the value of $W?$

A$)0\mathrm{.}5$

B$)1\mathrm{.}0$

C$)1\mathrm{.}5$

$2\mathrm{.}0$