a. Find the present values of the following cash flow streams. The appropriate interest rate is 9%. (Hint: It is fairly easy to work this problem dealing with the individual cash flows. However, if you have a financial calculator, read the section of the manual that that, when working with the calculator's cash flow register, you must enter CF0=0. Note also that it is quite easy to work the problem with Stream A: $ Stream B: $ b. What is the value of each cash flow stream at a 0% interest rate? Round your answers to the nearest dollar. Stream A $ Stream B \$