Exercise 3_ch3_no6 (NPV and IRR): You are offered the following three projects: N 3 A Project A B C B Cash flow today ($) -20 30 7 C Cash flow next year 40 - 15 10 4 5 Assume that the cost of capital (interest rate) is 12% a.) Find the NPV of each project. b.) If you can choose only one project, which one should you choose? How would your answer to question b change if the cost of capital were 5%? c.) d.) What is the range of cost of capital in which you will invest in project A