a. Find the present values of the following cash flow streams. The appropriate interest rate is 6%. (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 describes how to enter cash flows such as the ones in this problem. This will take a little time, but the investment will pay huge dividends throughout the course. Note 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 Excel, using procedures described in the Ch04 Tool Kit.x/sx.) Do not round intermediate calculations. Round your answers to the nearest cent. 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 $