c. \begin{tabular}{|l|l|l|l|} \hline Process & Arrivaltime & Burst time & Priority \\ \hline P1 & 12 & 10 & 2 \\ \hline P2 & 20 & 4 & 1 \\ \hline P3 & 18 & 12 & 4 \\ \hline P4 & 5 & 8 & 3 \\ \hline P5 & 25 & 6 & 5 \\ \hline \end{tabular} (a) Draw four Gantt charts that illustrate the execution of these processes using the following scheduling algorithms: FCFS, SJF, preemptive priority (a smaller priority number implies a higher priority), and RR (quantum=3). (b) What is the waiting time and turnaround time of each process for each of the scheduling algorithms in part (a)