(10 Points) An operating system uses Shortest Remaining time First Scheduling algorithm for preemptive scheduling of processes, consider the following set of processes with their arrival times and CPU burst time (in milliseconds), calculate the average waiting time (in milliseconds) and draw the Gantt chart as well. Show all your work Process ID Arrival Time Burst Time P1 0 12 2 4 P2 P3 3 6 P4 8 5