a. Find the preserit values of the following cash flow streams. The appropriate interest rate is 12% . (Hint: It is fairly easy to work this problem deallin with the Individual cash flows. However, if you have a financial calculator, read the section of the manual that describes how to onter 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 nith the calculator's cash flow register, you must enter CFo = 0 . Note also that it is quite easy to work the problem with Exced, using procedurec described in the Chos Teul Rit.x/sx.) Do not round intermediate calculations. Round your answers to the nearest cent. Stream A : $1 Stream B: 5 b. What is the value of each cash flow stream at a ow interest rate hound your answers to the nearest dolian. stream A \$ Stream Bi