Question

Three processes P1 (burst time 6 ms), P2 (burst time 4 ms), and P3 (burst time 2 ms) all arrive at time 0 and are scheduled using Round Robin with a time quantum of 4 ms, serviced in the order P1, P2, P3. What is the average waiting time across the three processes?

A 6 ms
B 4 ms
C 5 ms
D 7 ms
E 8 ms
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