please solution with explain 3- Suppose that three processes in the following table arrived in this order: P2, P3, P1. Process Arrival time Burst time P1 20 P2 6. P3 3 8. a. Draw the Gantt chart of the CPU scheduler using preemptive SJF. b. Calculate the response time, waiting time, and the turnaround time for each process. c. Calculate the average response time, waiting time, and the turnaround time for all processes.

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