Waterway Industries sells its product for $80 per unit. During 2022, it produced 60000 units and sold 50000 units (there was no beginning inventory). Costs per unit are: direct materials $24, direct labor $9, and variable overhead $3. Fixed costs are: $420000 manufacturing overhead, and $60000 selling and administrative expenses. Ending inventory under variable costing is $1800000.$360000.$800000.$430000