The Following is the income statement for Jackie Cafe for the month of May 2019. During the month, Jackie Cafe sold 2,000 units (production equals sales), and price per unit is $17: Sales Revenue Variable Costs Contribution Margin Fixed Costs Operating Income 34,000 15.000 19,000 15.000 4,000 Using the degree of operating leverage, estimate the change in operating income if total sales decrease 20% (assume no change in sales price per unit). a.-200 b.-2,000 OC-3,800 d