You have been offered a unique investment opportunity. If you invest 13,000 today, you will receive $650 one year from now, $1950 two years from now, and $13000 ten years from now. a. What is the NPV of the opportunity if the cost of capital is 7.1% per year? Dhould you take the opportunity? b. What is the NPV of the opportunity if the cost of the capital is 3.1% per year? Should you take it now?