Assume that four jobs, A$-$D$,$ require the CPU cycles listed below. Using the SJN algorithm, the average turnaround time is

Job: A B C D

CPU cycle: $5264$

A$)5\mathrm{.}5$

B$)6\mathrm{.}8$

C$)9\mathrm{.}0$

D$)11\mathrm{.}1$