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

$\backslash$table$[[$Activity Cost,Total Cost,Total Activity$],[$Assembly$.,$$$436,240,28,000,$machine$-$hours$],[$Processing orders.......,$$60,896,1,600,$orders$],[$Inspection$,$$$82,767,1,410,$inspection$-$hours$]]$

The company makes $230$ units of product F$60$N a year, requiring a total of $480$ machine$-$hours, $50$ orders, and $30$ inspection$-$hours per year. The product's direct materials cost is $$12\mathrm{.}70$ per unit and its direct labor cost is $$45\mathrm{.}93$ per unit. The product sells for $$126\mathrm{.}60$ per unit. According to the activity$-$based costing system, the product margin for product F$60$N is:

A$.$ $$6,251\mathrm{.}70$

B$.$ $$4,490\mathrm{.}70$

C$.$ $$6,393\mathrm{.}70$

D$.$ $$15,633\mathrm{.}10$