Develop a logic network for the sequence of activities listed in the table below:

Example of logic network. PIB is "preceded immediately by$"$ defines the activitv that came before the current activity.

Now the table for you to work on

$\backslash$table$[[$Activities$,$Duration,PIB$],[$A$,2^2,$NONE$],[$B$,3,$NONE$],[$C$,3,$A$],[$D$,4,$A$],[$E$,1,$B$],[$F$,2,$C$],[$G$,2,$E$],[$H$,5,$D$,$ F$,$ G$]]$

Using the logic network and the duration from the table in problem $2$ create the Critical Path Activity on Node diagram.

a$.$ What is the project duration?

b$.$ What are critical activities?