operating system

The arrival time of the process P1, P2, and P3 and their CPU-Burst time (unit time) are shown in the following table. Answer the following questions: When using SRF scheduling algorithm, (9) The turnaround time of Pl is: (10) 4 (b) 5 (c) 12 (d) 27 (1) 4 (b) 5 (c) 12 (d) 27 (11) The turnaround time of P3 is: (12) (a)4(b)5 (c) 12 (d) 27 (12) The average turnaround time is: (a) 4 (b) 5 (c) 12 (d) 27