Q$3\mathrm{.}1)$ Convert the following node network into an arrow network.

Q$3\mathrm{.}2)$ Draw the network $($You can use any method$)$ and develop the $S$ curve for the project. Establish the bar chart showing the associated cost with all necessary information.

$\backslash$table$[[$Activity$,$Duration,Predecessors,Total cost$],[$L$,3,-,3,000],[$M$,5,-,10,000],[$N$,1,-,4,000],[$O$,1,$L$,16,000],[$P$,7,$M$,21,000],[$Q$,6,$M$,12,000],[$R$,4,$N$,16,000],[$S$,3,$N$,15,000],[$T$,6,$O$,$ P$,12,000],[$U$,4,$Q$,$ R$,12,000],[$V$,3,$S$,9,000]]$