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 Selling Price $110.00 70.00 Unit Contribution Margin $40.00 20.00 Unit Variable Product $70.00 50.00 What was Rusty Co.'s weighted average unit contribution margin? Oa. $22.50 b. $60.00 Oc. $40.00 Od. $20.00