Problem $6$: Four employees are available to perform three jobs. The time $($in hours$)$ it takes each person

to perform each job is given in the following table:

Each person can do at most one job. Formulate an assignment problem to minimize the cost of

assigning people to jobs. $($Note: For this problem, you should provide a drawing of the minimum$-$cost

flow network. Explain in words what nodes and arcs represent, and label nodes and arcs with all

relevant data. You need not solve the optimization model.$)$