We can undertake an improvement project but have two alternate plans; A and B. Plan A has an initial cost of $8,000 and savings of $2,000 per year for 5 years. Plan B has an initial cost of $12,000 and a savings of $2,000 the first year, which grows by $500 each year thereafter for 5 years. Assume there are no other factors or cash flows. a. What is the internal rate of return (IRR) of each? Thus, which is best A or B? b. Which is the best alternative in terms of net present value if our time value of money is an annual compounded rate of 9 percent? c. Does this 9 Percent imply that they are worthwhile vs. doing nothing?