Oriole Company sells its product for $10400 per unit. Variable costs per unit are: manufacturing, $5900; and selling and administrative, $130. Fixed costs are: $26400 manufacturing overhead, and $36400 selling and administrative. There was no beginning inventory at 1/1/20. Production was 24 units per year in 2020-2022. Sales were 24 units in 2020, 20 units in 2021, and 28 units in 2022. Income under variable costing for 2021 is $24600. $29000. $53600. $31600