单选题：consider the following set of processes, with the length of the
consider the following set of processes, with the length of the CPU-burst time given in milliseconds, a smaller priority number implying a lower priority, the processes arriving in the order P1, P2, P3, P4,P5, all at time 0:
```
Process Burst time Priority
P1 8 3
P2 1 1
P3 2 4
P4 1 3
P5 4 2
```
Which is the most appropriate average waiting time using Round-robin scheduling with q=2ms ? @[B](1)
A. 10.1 ms
B. 5.2 ms
C. 3.6 ms
D. 4.5 ms
A.10.1 ms
B.5.2 ms
C.3.6 ms
D.4.5 ms
答案：B
```
Process Burst time Priority
P1 8 3
P2 1 1
P3 2 4
P4 1 3
P5 4 2
```
Which is the most appropriate average waiting time using Round-robin scheduling with q=2ms ? @[B](1)
A. 10.1 ms
B. 5.2 ms
C. 3.6 ms
D. 4.5 ms
A.10.1 ms
B.5.2 ms
C.3.6 ms
D.4.5 ms
答案：B