(Expected rate of refum and risk) Summerville Inc, is considering an investment in one of two common stocks. Given the information in the popup window: , which investment is better, based on the risk (as measured by the standard deviation) and return of each? a. The expected rate of return for Stock A is \%. (Round to two decimal places) (Expected rate of refum and risk) Summerville Inc, is considering an investment in one of two common stocks. Given the information in the popup window: , which investment is better, based on the risk (as measured by the standard deviation) and return of each? a. The expected rate of return for Stock A is \%. (Round to two decimal places)