Shown here is an income statement in the traditional format for a firm with a sales volume of 7.600 units. Cost formulas also are show $34,300 21,180 $13, 120 Revenues Cost of goods sold (55,600 + $2.65/unit) Gross profit Operating expenses: Selling ($i, 190 + $0.10/unit) Administration ($3,950 + $0.25/unit) Operating income 1,950 5,850 $ 5,320 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 from 7,600 units to 1. 11,400 units 2. 3,800 units. d. Refer to your answer to port a for total revenues of $34,300. Calculate the firm's operating income (or loss) if unit selling price and variable expenses per unit do not change and total revenues 1. Increase by $14,000. 2. Decrease by $3,500 Complete this question by entering your answers in the tabs below. Required A Required Required Required C2 Required : Required 02 Prepare an income statement in the contribution margin format