Given the following processes with their times and priority (lower number indicates higher priority)
| Process | Burst Time | Priority |
| P1 | 10 | 3 |
| P2 | 1 | 1 |
| P3 | 2 | 4 |
| P4 | 1 | 5 |
| P5 | 8 | 2 |
Which of the following is a value of average waiting time using priority scheduling algorithm?
1
9.2
2
6.8
3
7.6
4
10.0