St Macy Corporation's relevant range of activity is 4,500 units to 10,500 units. When it produces and sells 7.500 units, its average costs per unit are as follows: 00:07:42 Direct materials Direct labor Variable manufacturing overhead Fixed manufacturing overhead Fixed selling expense Fixed administrative expense Sales commissions Variable administrative expense Average Cost per Unit $4.90 $3.35 $1.35 $3.80 $1.30 $0.85 $1.25 $0.75 of the selling price is $26.00 per unit, the contribution margin per unit sold is closest to Multiple Choice O $9.60 56.95