单选题：considering the following set of processes, with the length of t

considering the following set of processes, with the length of the CPU-burst time given in milliseconds:
```
Process Arrival time Burst time
P1 0 3
P2 2 5
P3 4 1
P4 5 4
P5 8 1
```
For the Round Robin (quantum is 2) scheduling algorithm, the average waiting time is ___.@[D](1)
A. 44/5
B. 34/5
C. 29/5
D. 15/5




A.44/5
B.34/5
C.29/5
D.15/5


答案：D