The Blue Company is considering an expansion of one of its newer plants. The plant manager will be part of the decision making team. The plant manager knows that the company will use the following methods to decide whether to go forward with the expansion: Internal rate of return; Pay back period, and Net present value. The plant manager has asked for your assistance in educating him on each of the methods. Write a memo to the plant manager explaining each method, its strengths, its weaknesses, and provide a recommendation as to which one he should place the greatest emphasis in his decision making process. Submit your memo in a word document.