please answer with the answers and not just have to do it

Problem 1 Zodiac Fumiture is considering the production of a new line of metal office chairs. The chairs can be produced in-house using either process A or process B. The chairs can also be purchased from an outside supplier. The cost scenarios for each production alternative are given in the following table. a. Graphically plot the total costs for all three alternatives. Identify which range of product volume are best for each alternative. b. If the company produces only 600 chairs per year, which alternative is best? c. If the company produces 3000 chairs per year, which alternative is best