Mill Metals Inc. has three grades of metal product, Type 5, Type 10 , and Type 20. Financial data for the three grades are as follows: Type 5: 6 hours Type 10: 6 hours Type 20: 12 hours The Marketing Department is considering a new marketing and sales campaign. Which product should be emphasized in the marketing and sales campaign in order to maximize profitability? Determining the unit contribution margin per furnace hour will assist in making your decision. Round the unit contribution margin to two decimal places