National Inc. manufactures two models of CMD that can be used as cell phones, MPX, and digital camcorders. Model High F Great P Annual Sales in Units 10,000 16,000 National uses a volume-based costing system to apply factory overhead based on direct labor dollars. The unit prime costs of each product were as follows: Direct materials Direct labor High F $38.00 $17.52 Great P $25.40 $13.14 Budget factory overhead: Engineering and Design Quality Control Machinery Miscellaneous Overhead Total 2,409 engineering hours 12,848 inspection hours 33,726 machine hours 26,400 direct labor hours $ 404,712 269,808 539, 616 134,904 $1,349,040 National's controller had been researching activity-based costing and decided to switch to it. A special study determined National's two products have the following budgeted activities: Engineering and design hours Quality control inspection hours Machine hours Labor hours High F Great P 969 1,440 5,648 7,200 20,286 13,440 12,000 14,400 Using activity-based costing, total overhead per unit of Great P model is: (Rounded to the nearest cent.) Multiple Choice $45.99. $66.73. $61.32. $168.00. $42.61