Macy Corporation's relevant range of activity is 8,400 units to 17,000 units. When it produces and sells 12,700 units, its average costs per unit are as follows: Average Cost per Unit Direct materials $ 5.55 Direct labor $ 4.00 Variable manufacturing overhead $ 2.00 Fixed manufacturing overhead $ 3.60 Fixed selling expense $ 1.30 Fixed administrative expense $ 0.60 Sales commissions $ 1.25 Variable administrative expense $ 0.50 If the selling price is $32.50 per unit, the contribution margin per unit sold is closest to: Multiple Choice $19.20 $22.95 $11.55 $7.35