Which of the following statement (statements) is most true? i. A project's NPV will increase if the discount rate of the project goes down ii. One defect of the IRR method is that it does not take account of a project's cash flows over a project's full life iii. If the project's discount rate changes, it will not have any impact on the simple payback period a) i and iii b) i and ii c) ii and iii d) i, ii and