Five batch jobs A through E, arrive at a computer center at almost the same time. They have estimated running times of 6, 4, 8, 2, 10 minutes. For Round Robin scheduling algorithm, determine the mean process turnaround time. Ignore process switching overhead. Assume that only one job at a time runs, until it finishes. All jobs are completely CPU bound.

6 minutes

20.8 minutes

30 minutes

34.3 minutes