A manager must assign four engineers to projects, one to a project. The leader of Project C has indicated that he does not want engineer 2 or 3 on his project. Given the cost figures below for each project-engineer combination, and keeping in mind that two combinations are undesirable, determine assignments such that total cost will be minimized. Show your entire work. A B C D Engineer1 $22 $18 $20 $17 2 $18 $16 * $12 3 $26 $23 * $16 4 $28 $20 $24 $22 * undesirable