Pizana Computer Company has been purchasing carrying cases for its portable computers at a purchase price of $59 per unit. The company, which is currently operating below full capacity, charges factory overhead to production at the rate of 45% of direct labor cost. The unit costs to produce comparable carrying cases are expected to be as follows: Line Item Description Amount Direct materials $28.00 Direct labor 21.00 Factory overhead (45% of direct labor) 9.45 Total cost per unit $58.45 If Pizana Computer Company manufactures the carrying cases, fixed factory overhead costs will not increase and variable factory overhead costs associated with the cases are expected to be 12% of the direct labor costs. Question Content Area a. Prepare a differential analys