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Required information

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Jorgansen Lighting, Incorporated, manufactures heavy$-$duty street lighting systems for municipalities. The company uses variable costing for internal management reports and absorption costing for external reports. The company provided the following data:

$\backslash$table$[[,$Year $1,$Year $2,$Year $3],[$Inventories:$,,170,180],[$Beginning $($units$),200,180,220],[$Ending $($units$),170,$$$1,032,400,$$$996,400$