Consider the following project network and activity times $($in days$).$ Assume that management desires a $12-$day project completion time.

A project network is given with the starting point on the left and the ending finish point on the right with activities A through G$.$ The arcs between the activities are listed as follows.

Start to A and B

A to C

B to D

C to E and F

D to E and F

F to G

E and G to Finish