PA $19-4($Static$)$ Consider the AON graph of a project shown above...

Consider the AON graph of a project shown below.

Figure $19\mathrm{.}19$

A$1$ to A$2.$ A$2$ splits to A$3$ and A$5.$ The path from A$3$ is A$3,$ A$4$ A$8$ and A$3,$ A$6,$ A$7,$ A$8.$ The path from A$5$ is A$5,$ A$7,$ A$8.$

The activity times are $3,4,2,5,7,2,2,$ and $3$ days for activities A$1$

through A$8$

$,$ respectively. What is the critical path?