Use this information for Carter Co. to answer the question that follow. Carter Co. sells two products, arks and bins. Last year, Carter sold 14,000 units of arks and 56,000 units of bins. Related data are as follows: Unit Selling Unit Variable Unit Contribution Product Price Cost Margin Arks $120 $80 $40 Bins 80 60 20 What was Carter Co.'s unit contribution margin of E? O a. $20 0 b. $60 0 C. $92 ) 0 d. $24