Product Decisions Under Bottienecked Operations Mill Metals ine. has three grades of metal product, Type 5, Type 10, and Type 20. Financial data for the three grades are as follows: Mirs operations requlre all three graoks to be melted in a furnace before being formed: The furnace runs 24 hours a day, 7 days a week, and is a production bortiene The furnace hours required per unit of each product are as follows: The Marketing Department is considering a new marketing and sales campaign. Determining the unit contribution margin per furnace hour will assist in making your decision. Round the unit contribution margin to two decimal places