Bauer Manufacturing uses departmental cost driver rates to allocate manufacturing overhead costs to products. Manufacturing overhead costs are allocated on the basis of machine-hours in the Machining Department and on the basis of direct labor-hours in the Assembly Department. At the beginning of 20X3, the following estimates were provided for the coming year. Direct labor-hours Machine-hours Direct labor cost Manufacturing overhead costs Machining 30,000 Assembly 60,000 80,000 20,000 $500,000 $900,000 $420,000 $240,000 The accounting records of the company show the following data for Job #316: Direct labor-hours Machine-hours Direct material cost Direct labor cost Machining 120 Assembly 70 60 5 $300 $200 $100 $400 For Bauer Manufacturing, what is the annual manufacturing overhead cost-allocation rate for the Machining Department? A. $4.00 B. $4:20 OC. $5.25 D. $4.67