Advo Company is purchasing carrying cases at a delivered cost of exist8 per unit. The company, currently operating below full capacity. The costs to produce carrying cases is expected to be: If Advo Company makes the carrying cases instead, fixed factory overhead costs of exist1.0.0 will not increase. The selling price of the carrying case will remain the same at exist10. Advo Company should switch to making the cases because differential income is exist.60 continue to purchase the cases because differential income is exist.60 continue to purchase the cases because differential income is exist.40 switch to making the cases because differential income is exist.40