Please help explain the math on how to solve this. Thank you!

Notional Ine. manufactures two models of CMD that can be used as cell phones, MPX, and digital camcorders, National uses a volume based costing system to apply factory overhead based on direct labor dollars. The unit peime costs of each product were as follows: Nationais controler had been researching activity-based costing and decdeded to switch to it f fpecial stucty determined National's two products have the following budgeted activities Natiornals controller had been researching activity-based costing and decided to switch to it. A special study determined Nationais two products have the following budgeted activites: Using the firm's volume-based costing. applied factory overtead per unit tor the Great P model is (Rounded to the nearest cent.) Muitiph cheich Fibis 16132 Muliple Choice $65.43 $6132 $5404 $4599 $4342