(10-7) NPV Your division is considering two investment projects, each of which requires an up-front expenditure of $15 million. You estimate that the investments will produce the following net cash flows: Year Project A Project B $ 5,000,000 $20,000,000 10,000,000 10,000,000 20,000,000 6,000,000 a. What are the two projects' net present values, assuming the cost of capital is 5%? 10%? 15%? b. What are the two projects' IRRs at these same costs of capital