Contribution Income Statement and Operating Leverage Berry Basket sold 49,000 crates. (a) Prepare a contribution income statement for the year ended December 31, 2008. HINT: Use a negative sign with both "costs" answers. (b) Determine the company's 2008 operating leverage. (Round your answer to two decimal places.) (c) Calculate the percentage change in profits if sales decrease by 10 percent. (Round your answer to one decimal place.) 6 decrease acquisition on operating leverage and explain any change. (Round your answer to two decimal places.) 0