Processes \( P_1, P_2, P_3, P_4 \) arrive in that order at times 0, 1, 2, and 8 milliseconds
respectively, and have execution times of 10, 13, 6, and 9 milliseconds respectively.
Shortest Remaining Time First (SRTF) algorithm is used as the CPU scheduling
policy. Ignore context switching times.
Which ONE of the following correctly gives the average turnaround time of the four
processes in milliseconds?