Variable costs as a percentage of sales for Lemon Inc. are 67%, current sales are $598,000, and fixed costs are $201,000. How much will operating income change if sales increase by $45,200 ? a. $14,916 decrease b. $14,916 increase c. $30,284 decrease d. $30,284 increase Variable costs as a percentage of sales for Lemon Inc. are 67%, current sales are $598,000, and fixed costs are $201,000. How much will operating income change if sales increase by $45,200 ? a. $14,916 decrease b. $14,916 increase c. $30,284 decrease d. $30,284 increase