For an activity$-$on$-$node network such as that presented in the textbook, which of the follow regarding each activity that is on the critical path?

Select one or more:

a$.$ the activity's early start equals the activity's late finish

b$.$ the activity's late start equals the activity's early finish

c$.$ the activity's early start equals the activity's late start

d$.$ the activity's late start equals the activity's late finish

e$.$ the activity's early finish equals the activity's late finish

the activity's slack is zero $(0)$

g$.$ the activity's early start equals the activity's early finish