Krepps Corporation produces a single product. Last year, Krepps manufactured 29,010 units and sold 23,900 units. Production costs for the year were as follows: Direct materials Direct labor Variable manufacturing overhead Fixed manufacturing overhead $214,674 $121,842 $243,684 $319, 110 Sales totaled $1,159,150 for the year, variable selling and administrative expenses totaled $126,670, and fixed selling and administrative expenses totaled $205,971. There was no beginning inventory. Assume that direct labor is a variable cost. The contribution margin per unit was Multiple Choice O O $23.20 per unit O $24.30 per unit O $18.70 per unit O $28.50 per unit