a. From the following information, draw the project network

b. Identify the critical path.

c. Draw Gantt Chart.

d. Interpret the Gantt Diagram.

\begin{tabular}{lllr} ID & Description & Predecessor & Time \\ \hline A & External specifications & None & 8 \\ B & Review design features & A & 2 \\ C & Document new features & A & 3 \\ D & Write software & A & 60 \\ E & Program and test & B & 60 \\ F & Edit and publish notes & C & 2 \\ G & Review manual & D & 2 \\ H & Alpha site & E,F & 20 \\ I & Print manual & G & 10 \\ J & Beta site & H,I & 10 \\ K & Manufacture & K & 12 \\ L & Release and ship & K & 3 \\ \hline \end{tabular}