Need the Gantt chart for all of them.

Assume that a system has the following processes and their arrival and burst times: a) Draw the Gantt chart and calculate the waiting and turnaround times for each process using a FCFS scheduling algorithm? b) Draw the Gantt chart and calculate the waiting and turnaround times for each process using a preemptive SJF scheduling algorithm (SRTF: Shortest Remaining Time First)? c) Draw the Gantt chart and calculate the waiting and turnaround times for each process using a preemptive priority scheduling algorithm? (a smaller priority number implies a higher priority)