Green 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 1/1/18. Production was 24 units per year in 20182020. Sales were 24 units in 2018, 20 units in 2019, and 28 units in 2020. Income under variable costing for 2020 is $50040. $55940. $55160. $59560.