hurry up please

Consider the following process arrival, CPU and I/O burst times, and priorities given in the table below. Consider 1 as the highest priority. Assume that only one I/O device is available and it operates in FCFS manner without context switch time. Assume that there is only one CPU and it is scheduled using Non-preemptive Round Robin with quantum = 3ms with context switch = 1ms. PID Arrival Time CPU I/O CPU Priority burst time burst time burst time A 3 7 2 -- B 16 2 -- 1 10 4 -- 3 8 4 1 D 0 5 2 2 Draw CPU and I/O Gantt Chart, and then find Average waiting time, and average response time. Show your calculations in details