12. During its first year of operations, the McCormick Company incurred the following manufacturing costs: Direct materials, $5 per unit, Direct labor, $2 per unit, Variable overhead, $4 per unit, and Fixed overhead, $390,000. The company produced 39,000 units, and sold 30,000 units leaving 9,000 units in inventory at year-end. What is the value of ending inventory under variable costing? O $99,000 O $189,000 $90,000 O $390,000o