I need help with this question please. thank you so much!

A company has provided the following information: Direct materials Direct labor Variable manufacturing overhead Fixed manufacturing overhead Sales commissions Variable administrative expense Cost per Unit Cost per Period $ 6.85 $ 3.90 $ 1.25 $ 22,500 $ 1.00 $ 0.55 $ 7,500 Fixed selling and administrative expense If the selling price is $26.20 per unit, the contribution margin per unit sold is closest to: Multiple Choice $12.65 $6.65