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2) The following processes are being scheduled using a preemptive, roundrobin scheduling algorithm. Each process is assigned a numerical priority, with a higher number indicating a higher relative priority. In addition to the processes listed below, the system also has an idle task (which consumes no CPU resources and is identified as Pidle ). This task has priority 0 and is scheduled whenever the system has no other available processes to run. The length of a time quantum is 5 units. If a process is preempted by a higher-priority process, the preempted process is placed at the end of the queue a. Show the scheduling order of the processes using a Gantt chart. b. What is the turnaround time for each process? c. What is the waiting time for each process? d. What is the CPU utilization rate? Priorit 20 30 30 35 10 Burst 10 25 25 35 rea rriva P1 P3 P4 P5 P6 0 10 30 60 90