16) Wessner Corporation has provided the following 16) information: Direct materials Cost per Period Cost per Unit $ 6.20 $ 2.80 $ 1.45 Direct labor Variable manufacturing overhead Fixed manufacturing overhead Sales commissions Variable administrative expense Fixed selling and administrative expense S 12,000 $ 1.00 $ 0.55 $ 4,000 If the selling price is $25.00 per unit, the contribution margin per unit sold is closest to: A) $13.00 C) S11.55 B) $9.00 $16.00 4.