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 to shareholders, creditors, and the government. The company has provided the following data: Year 1 Year 2 Year 3 Inventories: Beginning (units) 200 170 180 Ending (units) 170 180 220 Variable costing net operating income $ 1,080,400 $ 1,032,400 $ 996,400 The companys fixed manufacturing overhead per unit was constant at $560 for all three years. 2. Assume in Year 4 that the companys variable costing net operating income was $984,400 and its absorption costing net operating income was $1,012,400. Did inventories increase or decrease during year 4