$5\mathrm{.}11\mathrm{.}20$: $($Problem $5\mathrm{.}30$ in the $10$th edition$).$

Using the Windows scheduling algorithm, determine the numeric priority of each of the following threads.

$($a$)$ A thread in the REALTIME$\_$PRIORITY$\_$CLASS with a relative priority of NORMAL

$($b$)$ A thread in the ABOVE$\_$NORMAL$\_$PRIORITY$\_$CLASS with a relative priority of HIGHEST

$($c$)$ A thread in the BELOW$\_$NORMAL$\_$PRIORITY$\_$CLASS with a relative priority of ABOVE$\_$NORMAL