A simple CPM network has three activities, A$,$ B$,$ and $C.A$ is an immediate predecessor of $B$ and of C$.B$ is an immediate predecessor of $C.$ The activity durations are $A=4,B=3,C=8.$

Select one:

a$.$ The critical path is A$-$B$-$C$,$ duration $15.$

b$.$ The network has no critical path.

c$.$ The critical path is A$-$C$,$ duration $12.$

d$.$ The critical path is A$-$B$-$C$,$ duration $13\mathrm{.}5$

Clear my choice