Presented here is the income statement for Big Sky Incorporated for the month of February: sales $$60,500,$ Cost of goods sold $$53,600,$ Gross profit $$6,900,$ Operating expenses $$14,200,$ operating loss $($$$7,300).$ Based on an analysis of cost behavior patterns, it has been determined that the company's contribution margin ratio is $19\%.$ Required: a$.$ Rearrange, the preceding income statement to the contribution margin format. b$.$ If sales increase by $10\%$ what will be the firm's operating income $($or loss$)?$ c$.$ Calculate the amount of revenue required for Big Sky to break even.