A company wants to choose between project A and project B which are mutually exclusive. The expected cash flows are given in the table below. The company has estimated the IRRs of project A, project B and the difference between B and A. Please, help the company decide at what ranges of opportunity cost of capital (r) should it choose project B. (Hint: Draw the NPV project graph, or NPV profile, of the projects.) Time 0 1 2 3 4 IRR PROJECT A -300 200 200 50 50 33.2% PROJECT B -400 50 100 300 300 22.9% PROJECT BA -100 -150 -100 250 250 15.2%