Problems with IRR White Rock Services Inc. has an opportunity to make an investment with the following projected cash flows. a. Calculate the NPV at the following discount rates and plot an NPV profile for this investment: 0%,5%,7.5%,10%,15%,20%,22.5%,25%,30%. b. What does the NPV profile tell you about this investment's IRR? c. If the company follows the IRR decision rule and their cost of capital is 15%, should the) accept or reject the opportunity? Why is it hard to make a decision on this investment based solely on the IRR rule? a. Calculate the NPV at the following discount rates for this investment: 0%,5%,7.5%, 10%,15%,20%,22.5%,25%,30%. The NPV at 0% is \$ . (Round to the nearest cent.)