$.($a$)$ Diagram a two$-$stage cost system to determine the profitability of the various jobs. You will need to choose resource drivers to allocate the cost of resources to cost pools. You will then need to choose cost drivers to allocate the costs in various cost pools to jobs. $($b$)$ using this diagram, compute the cost driver rates and calculate the profitability of each job. I expect that you will have and will include reasons to support this analysis. $($c$)$ Determine Customer Profitability.