on 7 Walsh Corporation has provided the following information: et ered out of 2 9 question Cost per Unit Cost per Period Direct materials $ 6.85 Direct labor $ 3.90 Variable manufacturing overhead $ 1.25 Fixed manufacturing overhead $ 22,500 Sales commissions $ 1.00 Variable administrative expense $ 0.55 Fixed selling and administrative expense $ 7,500 If the selling price is $26.20 per unit, the contribution margin per unit sold is closest to: Select one: O a. $12.65 O b. $9.70 O c. $6.65 O d. $15.45