Shown here is an income statement in the traditional format for a firm with a sales volume of 15,500 units: Revenues $139, 500 Cost of goods sold ($10,000 + $2.95/unit) 55,725 Gross profit $ 83,775 Operating expenses: Selling ($2,000 + $0.85/unit) 15,175 Administration ($4, 700 + $0.50/unit) 12,450 Operating income $ 56,150 Required: a. Prepare an income statement in the contribution margin format. b. Calculate the contribution margin per unit and the contribution margin ratio. c. Calculate the firm's operating income (or loss) if the volume changed to 1. 20,500 units. 2. 7,500 units. d. Refer to your answer to part a when total revenues were $139,500. Calculate the firm's operating income (or loss) if unit selling price and variable expense per unit do not change and total revenues 1. Increase by $12,500. 2. Decrease by $9,000. Complete this question by entering your answers in the tabs below. Required A Required B Required C1 Required C2 Required D1 Required D2 Prepare an income statement in the contribution margin format. Contribution Margin Income Statement Revenues $ 139,500 Variable expenses: Cost of goods sold $ 45,725 Selling expenses 13.175 Administrative expenses 7,750 Total variable expenses 66.650Contribution margin 72,850 Fixed expenses: Cost of goods sold 10,000 Selling expenses Administrative expenses Total fixed expenses 10,000 $ 62,850Required A Required B Required C1 Required C2 Required D1 Required D2 Calculate the contribution margin per unit and the contribution margin ratio. (Do not round intermediate calculations. Round your answers to 2 decimal places.) Contribution margin per unit Contribution margin ratio % Complete this question by entering your answers in the tabs below. Required A Required B Required C1 Required C2 Required D1 Required D2 :Calculate the firm's operating income (or loss) if the volume changed to 20,500 units. (Do not round intermediate :calculations.) Complete this question by entering your answers in the labs below. Required C1 Required C2 Required D1 Required A Required B Required D2 Calculate the m1's operating income (or loss) if the volume changed to 7,500 units. (Do not round intermediate calculations.) ( Required C1 Required B1 ) Complete this question by entering your answers in the tabs below. Required A Required B Required C1 Required C2 Required D1 Required D2 Refer to your answer to part a when total revenues were $139,500. Calculate the firm's operating income (or loss) if unit selling price and variable expense per unit do not change and total revenues, calculate the firm's operating income (or loss) if unit selling price and variable expense per unit do not change and total revenues increase by $12,500. (Do not round intermediate calculations.) Show less A Complete this question by entering your answers in the bibs below. Required A Required B Required C1 Required C2 Required D1 Required D2 Refer to your answer to part a when total revenues were $139,500. Calculate the nn's operating income (or loss) if unit selling price and variable expense per unit do not change and total revenues. calculate the rrn's operating income (or loss) if unit selling price and variable expense per unit do not Change and total revenues decrease by $9,000. (Do not round intermediate calculations.) ( Required D1 Show last