a. Which unit would you recommend? II. Since we are examining costs, the unit chosen would be the one that had the lower NPV of costs. Since LCC's NPV of costs is lower than HCC's, LCC would be chosen. III. Since all of the cash flows are negative, the NPV's cannot be calculated and an alternative method must be employed. IV. Since all of the cash flows are negative, the NPV's will be negative and we do not accept any project that has a negative NPV. V. Since all of the cash flows are negative, the IRR's will be negative and we do not accept any project that has a negative IRR. b. If Kim's controller wanted to know the IRRs of the two projects, what would you tell him? I. The IRR of each project is negative and therefore not useful for decision-making. II. The IRR cannot be calculated because the cash flows are all one sign. A change of sign would be needed in order to calculate the IRR. III. The IRR cannot be calculated because the cash flows are in the form of an annuity. IV. The IRR of each project will be positive at a lower WACC. V. There are multiple IRR's for each project. c. If the WACC rose to 13% would this affect your recommendation? I. When the WACC increases to 13%, the IRR for HCC is greater than the IRR for LCC, HCC would be chosen. II. Since all of the cash flows are negative, the NPV's will be negative and we do not accept any project that has a negative NPV. III. When the WACC increases to 13%, the NPV of costs are now lower for LCC than HCC. IV. When the WACC increases to 13%, the NPV of costs are now lower for HCC than LCC. V. When the WACC increases to 13%, the IRR for LCC is greater than the IRR for HCC, LCC would be chosen. Why do you think this result occurred? I. The reason is that when you discount at a higher rate you are making negative CFs higher thus improving the NPV. II. The reason is that when you discount at a higher rate you are making negative CFs higher and this lowers the NPV. III. The reason is that when you discount at a higher rate you are making negative CFs smaller and this lowers the NPV