4.1 | Assume that the correct discount rate for the following cash flows is 8%. What is the present value of the following cash flows | a. | $50 at the end of 3 years [ | b. | $50 at the end of 100 years | c. | $50 received at the end of each year for 20 years | d. ] $50 received at the beginning of each year, totaling 20 payments.(8 marks) |