(Related to Checkpoint 6.6) (Present value of annuities and complex cash flows) You are given three investment alternatives to analyze. The cash flows from these three investments are as follows: a. What is the present value of investment A at an annual discount rate of 18 percent? s. (Round to the nearest cent) b. What is the present value of investment B at an annual discount rate of 18 percent? (Round to the nearest cent)