As long as the discount rate is positive, Project B will always be worth less today than will Project A. b. The present value pf Project A cannot be computed because the second cash flow is equal to zero. c. The present value at time zero of the final cash flow for Project A will be discounted using an exponent of three. d. Both sets of cash flows have equal present values as of time zero given a positive discount rate. e. The cash flows for Project B are an annuity, but those of Project A are not.