Green Thumb makes small plant stands that sell for $25 each. The company's annual level of production and sales is 120,000 units. In addition to $430,500 of fixed manufacturing overhead and $159,050 of fixed administrative expenses, the following per-unit costs have been determined for each plant stand: Direct material $ 6.00 Direct labor 3.00 Variable manufacturing overhead 0.80 Variable selling expense 2.20 Total variable cost $12.00 Required: a. Prepare a variable costing income statement at the current level of production and sales