Make-or-Buy Decision Pizana Computer Company has been purchasing carrying cases for its portable computers at a purchase price of $57 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 b as follows: If Pizana Computer Company manufactures the carrying cases, foxed 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. a. Prepare a differential analysis deted May 31 to determine whether the company should make (Aiternative 1) or buy (Aternative 2) the carrying case. Round your answers to two decimal places. If an amount is zero, enter " % " b. Assuming there were no better alternative uses for the spare capacity, it would to manufacture the carrying cases. Fxed factory overhead is to this decision