Compute the companys contribution margin ratio and variable expense ratio B Compute the companys breakeven point in both unit sales and dollar sales C Assume that sales increase by 500000 next year If cost behaviour patterns remain unchanged by how much will the companys net operating income increase Use the contribution margin ratio to compute your answer D Assume that next year management wants the company to earn a profit of at least 80000 How many units will have to be sold to meet this targ