Fitchett Company reported the following operating results: Sales Variable Costs Contribution Margin Fixed Costs Operating Income $400,000 232,000 168,000 108,000 $60,000 If sales volume increases 8%, how much will operating income increase by? (Hint: Calculate the operating leverage factor first) Insert appropriate prompt, input type, and O A. 16% OB. 2.8% O c. 22.4% OD. 8%