As the director of capital budgeting for Denver Corporation, you are evaluating two mutually exclusive projects. Project X is a three year project and project Z is a four year project. The project net cash flows are followed: Project X Project 2 Year Cash Flox -$200,000 $300,000 50,000 80,000 100,000 70,000 120,000 140,000 270,000 Denver's cost of capital is 15 percent