Under absorption costing, a company had the following per unit costs when 10,000 units were produced. Direct labor Direct materials Variable overhead 4.00 5.00 6.00 Total variable cost 15.00 Fixed overhead ($90,000/10,000 units) 9.00 Total product cost per unit $24.00 The company sells its product for $78.00 per unit. Due to new regulations, the company must now incur $4.00 per unit of hazardous waste disposal costs and $4,400 per year of fixed hazardous waste disposal costs. Compute the contribution margin per unit, including hazardous waste disposal costs. Contribution margin per unit