The ready list RL contains processes $1$ then $3.$ Consider $(1),(2)$ as independent operations.

PCB $0$

$...$

blocked

$...$

$...$

process$\_$stateother$\_$resourcesPCB $1$PCB $2$PCB $3$

$...$

running

$...$

$...$

$...$

blocked

$...$

$...$

$...$

ready

$...$

$...$

RCB $0$statewaiting$\_$list

$...$

allocated

$...$

RCB $1$

$...$

free

$...$

RCB $2$

$...$

allocated

$...$

RCB $3$

$...$

allocated

$...$