Adelberg Corporation makes two products: Product A and Product B. Annual production and sales are 1,500 units of Product A and 1,500 units of Product B. The company has traditionally used direct labor-hours as the basis for applying all manufacturing overhead to products. Product A requires 0.4 direct labor-hours per unit and Product B requires 0.2 direct labor-hours per unit. The total estimated overhead for next period is $87,630. The company is considering switching to an activity-based costing system for the purpose of computing unit product costs for external reports. The new activity-based costing system would have three overhead activity cost pools--Activity 1, Activity 2, and General Factory--with estimated overhead costs and expected activity as follows: Expected Activity
Activity Cost Pool Estimated Overhead Costs Product A Product B Total
Activity 1 $ 41,400 1,000 500 1,500
Activity 2 15,720 800 400 1,200
General Factory 30,510 600 300 900
Total $ 87,630
(Note: The General Factory activity cost pool's costs are allocated on the basis of direct labor-hours.)
The overhead cost per unit of Product B under the activity-based costing system is closest to:
a. $42.90
b. $9.10
c. $21.30
d. $63.92