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 Unit Variable Unit Contribution Product Price Cost Margin X $110 $70 $40 Y 70 50 20 Assuming that last year's fixed costs totaled $675,000, what was Rusty Co.'s break-even point in units? a.30,000 units b.30,100 units c.11,250 units d.16,875 units