Chattahoochee River Company produces three products-26Z, 4D, and 19R. Data concerning the three products follow (per unit): with a maximum of 20,766 cu feet available each month. Required: 1. Calculate the contribution margin per cubic foot of the constraining resource for each product. 2. Which orders would you advise the company to accept first, those for 26Z, 4D, or 19R? Which orders second? Third? 3. What is the maximum contribution margin that the company can earn per month if it makes optimal use of its 20,766 cubic feet of materials