You have been offered a unique investment opportunity. If you invest $ 9,100 today, you will receive $ 455 one year from now, $ 1365 two years from now, and 9100 in ten years. a. What is the NPV of the opportunity if the cost of capital is 6.1 % per year? Should you take the opportunity? b. What is the NPV of the opportunity if the cost of capital is 2.1 % per year? Should you take it now?