Swifty's Shop can make 1000 units of a necessary component with the following costs: $28000 6000 Direct Materials Direct Labor Variable Overhead Fixed Overhead 3000 ? The company can purchase the 1000 units externally for $43000. The unavoidable fixed costs are $2000 if the units are purchased externally. An analysis shows that at this external price, the company is indifferent between making or buying the part. What are the fixed overhead costs of making the component? Cannot be determined $8000 O $4000 O $6000