单选题：Sometimes two scheduling criteria are conflict with each other,

Sometimes two scheduling criteria are conflict with each other, and not satisfied both. Which of the following pairs of scheduling criteria are ALWAYS non-conflicting? @[B](1)
A. CPU utilization and response time
B. Average turnaround time and average waiting time
C. Average turnaround time and maximum waiting time
D. I/O device utilization and CPU utilization




A.CPU utilization and response time
B.Average turnaround time and average waiting time
C.Average turnaround time and maximum waiting time
D.I/O device utilization and CPU utilization


答案：B