Spendlove Corporation has provided the following data from its activity-based costing system:

Activity Cost Pool	Total Cost	Total Activity
Assembly	$1,471,965	60,500	machine-hours
Processing orders	$54,223.50	1,850	orders
Inspection	$152,154	2,140	inspection-hours

The company makes 1,230 units of product S78N a year, requiring a total of 1,380 machine-hours, 103 orders, and 39 inspection-hours per year. The product's direct materials cost is $52.21 per unit and its direct labor cost is $17.15 per unit. The product sells for $112.50 per unit.

According to the activity-based costing system, the product margin for product S78N is: (Round your intermediate calculations to 2 decimal places.)

a) $13,694.97

b) $16,467.87

c) $53,062.20

d) $16,713.90