Rusty Co. sells two products: X and Y. Last year, Rusty sold 5,000 units of X and 35,000 units of Y. Related data are as follows: Unit Selling Product X Price $110 70 Unit Variable Cost $70 Unit Contribution Margin $40 20 Y 50 For break-even analysis, the unit contribution margin of E was Oa. $40.00 Ob. $60.00 Oc. $22.50 Od. $20.00