Yellow Company's variable expenses are 40% of sales and have monthly fixed expenses of $15,000. The monthly target operating income is $3,600. What is Yellow Company's operating leverage factor at the target level of operating income? What is operating income if sales volume increases 10%? OA. 2.06; $4,342 OB. 0.19; $3,668 OC. 1.24; $4,046 OD. 5.17; $5,461 wwwww