Airborne Travel uses the contribution margin income statement internally. Airborne's first quarter results are as follows: (Click the icon to view the income statement.) Airborne's relevant range is sales of between $110,000 and $690,000. Read the requirements. Requirement 1. Prepare contribution margin income statements at sales levels of $250,000 and $400,000. (Hint: Use the contribution margin ratio.) Begin by preparing the contribution margin income statement at the $250,000 level. (Round the variable expense rate to the nearest whole percent. Enter losses with a minus sign or parentheses.) Airborne Travel Contribution Margin Income Statement Three Months Ended March 31 Sales revenue Less: Variable expenses Contribution margin Less: Fixed expenses Operating income (loss)