$($a$)$ Based on the information in Table $1,$ draw a complete of the precedence diagram as learned in the class.

$[15$ Marks$]$

$($b$)$ Given the total completion of the house is $83$ weeks. Calculate the value of $"y"$ in Table $1$ AND each path's total activity time.

$[7$ Marks$]$

$($c$)$ List up THREE $(3)$ processes exist in the knowledge area of schedule based on Project Management Body of Knowledge, $6^{th}$ Edition.

$[3$ Marks$]$

Table $1$: House construction

$\backslash$table$[[$Task$,$Predecessors,Duration $($weeks$)],[$A$,$START,$12],[$B$,$START,$9],[$C$,$A$,y$