a. What are the two projects' net present values, assuming the cost of capital is 5% ? Do not round intermediate calculations. Round your answers to the nearest dollar. Project A: $ Project B: $ What are the two projects' net present values, assuming the cost of capital is 10% ? Do not round intermediate calculations. Round your answers to the nearest dollar. Project A: \$ Project B: $ What are the two projects' net present values, assuming the cost of capital is 15% ? Do not round intermediate calculations. Round your answers to the nearest dollar. Project A: \$ Project B: \$ b. What are the two projects' IRRs at these same costs of capital? Do not round intermediate calculations. Round your answers to two decimal places. Project A: % Project B: %