A queuing model which follows the M$/$M$/$k assumptions has $\backslash$lambda $=3\mathrm{.}2,\backslash$mu $=2,$ and $2$ servers. The average waiting time in the system is

Group of answer choices

$2\mathrm{.}8444$

$0\mathrm{.}8889$

$0\mathrm{.}3129$

$1\mathrm{.}3889$