单选题：In the scheduling criteria, the turnaround time means ________.
In the scheduling criteria, the turnaround time means ________. @[A](1)
A. The interval from the time of submission of a CPU burst cycle to the time of completion.
B. The time that the user waits for from the submission of a request until the first response is produced.
C. The sum of the periods spent waiting in the ready queue.
D. The total time spent by the user waiting for the process to complete execution.
A.The interval from the time of submission of a CPU burst cycle to the time of completion.
B.The time that the user waits for from the submission of a request until the first response is produced.
C.The sum of the periods spent waiting in the ready queue.
D.The total time spent by the user waiting for the process to complete execution.
答案：A
A. The interval from the time of submission of a CPU burst cycle to the time of completion.
B. The time that the user waits for from the submission of a request until the first response is produced.
C. The sum of the periods spent waiting in the ready queue.
D. The total time spent by the user waiting for the process to complete execution.
A.The interval from the time of submission of a CPU burst cycle to the time of completion.
B.The time that the user waits for from the submission of a request until the first response is produced.
C.The sum of the periods spent waiting in the ready queue.
D.The total time spent by the user waiting for the process to complete execution.
答案：A