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80. The Harvey Company has provided the following information about its only product when they sold 10,000 units (all items are per unit). Revenue Direct labor cost Direct materials $15.00 1.50 2.00 6.00 Allocated manufacturing overhead (1/3 is variable, 2/3 is fixed) Selling and administrative 1.00 (1/2 is variable, 2 is fixed) Profit before tax $4.50 For every additional unit sold above 10,000, the company's profit before taxes will increase by: A. $4.50 per unit B. $9.00 per unit C. $7.00 per unit D. $11.50 per unit Self-test-B 3-15