I've been doing some practice questions on the term NPV in finance and I always get a little bit confused on how to work on a question like this.

Your firm has identified three potential investment projects. The projects and their cash ows are shown here: (Click on the following icon la in order to copy its contents into a spreadsheet.) Project Cash Flow Today Cash Flow in One Year (millions) (millions) A - $9 $22 B $4 $5 C $23 - $13 Suppose all cash ows are certain and the risk-free interest rate is 8%. a. What is the NPV of each project? b. If the rm can choose only one of these projects, which should it choose based on the NPV decision rule? c. If the rm can choose any two of these projects. which should it choose based on the NPV decision rule? a. What is the NPV of each project? The NPV of project A is $|:| million. (Round to two decimal places.) The NPV of project B is $|:| million. (Round to two decimal places.) The NPV of project C is $|:| million. (Round to two decimal places.) b. If the rm can choose only one of these projects, which should it choose based on the NPV decision rule? (Select the best choice below.) 0 A. Project C Q B. Project B O C. ProjectA O D. Cannot tell c. If the rm can choose any two of these projects. which should it choose based on the NPV decision rule? (Select the best choice below.) 0 A. Project A and project B O B. Project B and project C O C. Project A and project C O D. Cannot tell