Under absorption costing, a company had the following unit costs when 8,000 units were produced. Direct labor Direct material Variable overhead Fixed overhead ($60,000/8,000 units) Total production cost $ 8.50 per unit $ 9.00 per unit. $6.75 per unit $7.50 per unit $ 31.75 per unit Compute the product cost per unit under variable costing if 25,000 units had been produced.