The network below represents a project being analyzed by the critical path method. Activity durations are $A=5,B=2,C=12,D=3,E=5,F=1,G=7,H=2,I=10,$ and $J=6.$

a$.$ What task must be on the critical path, regardless of activity durations?

b$.$ What is the duration of path $A-B-E-H-J?$

c$.$ What is the critical path of this network?

d$.$ What is the length of the critical path?

e$.$ What is slack time at activity $H?$

$f.$ What is the Late Finish of activity $H?$

g$.$ If activity $C$ were delayed by two time units, what would happen to the project duration?