Grey Corporation uses a job-order costing system with a single plantwide predetermined overhead rate based on machine hours. The company based its predetermined overhead rate for the current year on the following data: 20,000 $176,000 Total machine hours Total fixed manufacturing overhead cost Variable manufacturing overhead per machine hour $2.20 Recently, Job F628 was completed with the following characteristics: Total machine 200 hours Total direct 720 labor hours Direct materials $540 cost Direct labor $10 per hr rate The total job cost for Job F628 is: $9.400 $9.940 $7,740 O $2,740 None of the above