[10\%] Consider the following set of processes. For the priority number, a smaller number indicates a higher priority. (a) [5\%] Draw the Gantt chart illustrating the execution of these processes using RR (time quantum =5 ), and list the turnaround time of each process. (b) [5\%] Draw the Gantt chart illustrating the execution of these processes using SRTF (Shortest Remaining Time First), and list the waiting time of each process