Your firm has identified three potential investment projects. The projects and their cash flows are shown here: (Click on the following icon in order to copy its contents into a spreadsheet.) Suppose all cash flows are certain and the risk-free interest rate is 6%. a. What is the NPV of each project? b. If the firm can choose only one of these projects, which should it choose based on the NPV decision rule? c. If the firm can c.honse anv two of these nroier.ts which should it chonse hased on the NPV decision rule