Presented here is the income statement for Big Sky Incorporated for the month of February: Based on an analysis of cost behavior patterns, it has been determined that the company's contribution margin ratio is 18%. Required: a. Rearrange the preceding income statement to the contribution margin format. b. If sales increase by 15%, what will be the firm's operating income (or loss)? c. Calculate the amount of revenue required for Big Sky to break even. Complete this question by entering your answers in the tabs below. Rearrange the preceding income statement to the contribution margin format. Complete this question by entering your answers in the tabs below. If sales increase by 15%, what will be the firm's operating income (or loss)? Note: Do not round intermediate calculations. Complete this question by entering your answers in the tabs below. Calculate the amount of revenue required for Big Sky to break even