Product Decisions Under Bottlenecked Operations 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: Mill's operations require all three grades to be meited in a furnace before being formed. The furnace runs 24 hours a dey, 7 days a week, and is a production bottleneck. 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 par fumace hour will assist in making your decision. Round the unit contribution margin to two decimal places