Use this information for Rusty Co. to answer the question that follow. 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 Price Product Unit Variable Cost $70 50 Unit Contribution Margin $40 20 $110 Y 70 What was Rusty Co.'s weighted average unit contribution margin? a. $60.00 Ob. $20.00 c. $22.50 Od. $40.00