Income and Expense Statement problem under the variable cost system and the absorption system This is the Statement of Income and Expenses forecast for 2021 for Corp. Calonne. Analyze it to determine which approach has been used in your preparation. Calonne Corporation Proforma Statement of Income and Expenses For the fiscal period 2021 Sales: $ 39,600 Cost of Sold: (COGS) Inventory 1-1-21 00000 Variable Manufacturing Costs (COGM) 12,000 Indirect manufacturing fixed costs (FMO) 9,600 Available for sale 21,600 Inventory 12-31-21 7,200 Cost of sales 14,400 Adjustment for variation in denominator level 3,200 Operational expenses: Marketing: Variable 7,600 Fixed 10,400 Total operating expenses 18,000 Operating income $ 4,000 Additional Information: Denominator level: 800 units Current production level: 600 units Current sales level: 400 units How much is the operating income under the alternative method to the one presented (cost absorption (FAC) ??? or variable cost method ???? A. $ 800 b. $ 4,800 c. $3,200 d. $ 4,000