Green Company sells its product for $11700 per unit. Variable costs per unit are: manufacturing, $5500; and selling and administrative, $135. Fixed costs are: $30000 manufacturing overhead, and $40000 selling and administrative. There was no beginning inventory at 1/1/18. Production was 20 units per year in 2018-2020. Sales were 20 units in 2018, 16 units in 2019, and 24 units in 2020. Income under variable costing for 2020 is $61640. $67140. $69560. $75560