please explain A, B , and C

(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: Investment Alternatives End of Year B 1 $20,000 $20,000 2 20,000 3 20,000 20,000 20,000 $20,000 20,000 100,000 7 20,000 20,000 cm) a. What is the present value of investment A at an annual discount rate of 25 percent? (Round to the nearest cent.) 4 5 6