Stonehenge Inc., a manufacturer of landscaping blocks, began operations on April 1 of the current year. During this time, the company produced 750,000 units and sold 720,000 units at a sales price of $9 per unit. Cost information for this period is shown in the following table: Production costs Direct materials $1.80 per unit Direct labor $.30 per unit Variable overhead $495,000 in total Fixed overhead $450,000 in total Non production costs Variable selling and administrative $18,000 in total Fixed selling and administrative $53,000 in total a. Prepare Stonehenge's December 31 income statement for the current year under absorption costing. b. Prepare Stonehenge's December 31 income statement for the current year under variable costing