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: Unit Variable Cost Unit Contribution Margin Product Unit Selling Price $110.00 70.00 X $70,00 $40.00 Y 50.00 20.00 What was Rusty Co.'s weighted average unit contribution margin? Oa. $22.50 Ob. 540.00 Oc. $20.00 Od 560.00