Differential Analysis Instructions Fremont Computer Company has been purchasing carrying cases for its portable computers at a purchase price of $84 per unit. The company, which is currently operating below full capacity, charges factory overhead to production at the rate of 50% of direct labor cost. The unit costs to produce comparable carrying cases are expected to be as follows: Direct materials $56 Direct labor 20 Factory overhead ( 50% of direct labor) 10 Total cost per unit $86 If Fremont 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 10% of the direct labor costs. Required: a. Prepare a differential analysis dated