Case Study $3$Case Study $3$ is for a total of $25$ points. Submit your responses in one single Word document.Below is information about a project to implement a new manufacturing cell to assemble personal digital assistant devices. Assume $5-$day week.Task DurationEstimatesImmediatePredecessorsA. Determine process requirements $2$ weeks NoneB. Benchmark competitor's processes $4$ weeks AC$.$ Prepare benchmark report $1$ week BD$.$ Design process and layout $($preliminary$)2$ weeks AE$.$ Finalize design and set up manufacturing cell $2$ weeks C& DF$.$ Select and train operators $1$ week DG$.$ Pilot test new process $2$ weeks E & FH$.$ Finalize process design $1$ week Ga$.$ Draw an activity$-$on$-$node $($AON$)$ network. You may submit a hand$-$drawn version or use a tool of your choice to draw the network diagram or $(8$ points$)$b$.$ Identify the Early Start, Early Finish, Late Start, Late Finish, critical path, total float and free float using the critical path algorithm. $($ES $1$ point, EF $1$ point, LS $1$ point, LF $1$ point, critical path $1$ point, total float and free float $1$ point $=6$ points$)$c$.$ Which of these tasks should the project manager track most closely? $(4$ points$)$d$.$ Where do you see potential errors in network logic? Explain your reasoning. $(4$ points$)$e$.$ What would happen if a new estimate for Task D increases its expected duration from two weeks to six weeks? Would the project take longer? Would anything else change? Explain you answer. $(3$ points$)$