You have been offered a unique investment opportunity. If you invest $8,300 today, you will receive $415 one year from now, $1,245 two years from now, and $8,300 ten years from now. a. What is the NPV of the opportunity if the cost of capital is 6.5% per year? Should you take the opportunity? b. What is the NPV of the opportunity if the cost of capital is 2.5% per year? Should you take it now