The Nautical Corporation manufactures custom-made wood wall units. The following data pertains to Job X4A: Direct materials placed into production $9,000 Direct labor hours worked 300 hours $15 Direct labor rate per hour Machine hours worked 100 hours Factory overhead rate is $22.50 per machine hour. Job X4A consists of 500 units. Refer to Figure 5-1. One-half of Job X4A was sold for S10,000. What is the total amount of costs assigned to Job X4A? O $20,250 O $15,750 O $13,500 O $9,000 14ntel