In a PERT$/$CPM network of project activities, if there is more than one activity leaving a node, the rule for calculating the latest finish time for activities prior to that node.

A$)$ To use the largest value of the latest start time for all activities leaving that activity.

B$)$ To use the largest value of the earliest start time for all activities leaving that activity.

C$)$ To use the smallest value of the earliest start time for all activities leaving that activity.

D$)$ To use the smallest value of the latest start time for all activities leaving that activity.

E$)$ None of the above