单选题：Suppose 4 jobs, each of which having a burst time of 2 minutes,

Suppose 4 jobs, each of which having a burst time of 2 minutes, are submitted to a system at almost the same time. If the system uses the FCFS scheduling algorithm, what is the average turnaround time of these 4 jobs? @[C](1)
A. 3 minute
B. 4 minutes
C. 5 minutes
D. 6 minutes





A.3 minute
B.4 minutes
C.5 minutes
D.6 minutes


答案：C