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%? A. 2.00; $4,342 OB. 0.19: $3,668 OC 124: $4,046 OD 5.17: $5,461