please answer all 3 required parts

Exercise 13-12 (Static) Volume Trade-Off Decisions [LO13-5] Benoit Company produces three products-A, B, and C. Data concerning the three products follow (per unit): The company estimates that it can sell 800 units of each product per month. The same raw material is used in each product. The material costs $3 per pound with a maximum of 5,000 pounds available each month. Required: 1. Calculate the contribution margin per pound of the constraining resource for each product. 2. Which orders would you advise the company to accept first, those for A, B, or C ? 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 5,000 pounds of materials