Keller Construction is considering two new investments. Project E calls for the purchase of earth moving equipment. Project H represents an investment in a hydraulic lift. Keller wishes to use a net present value profile in comparing the projects. The investment and cash flow patterns are as follows: Use Appendix B. (a) Determine the net present value of the projects based on a zero discount rate. (b) Determine the net present value of the projects based on a 10 percent discount rate. (d) If the two projects are not mutually exclusive, what would your acceptance or rejection decision be if the cost of capital (discount rate) is 8 percent? (Use the net present value profile for your decision; no actual numbers are necessary.)