(Expected rate of return and risk) Syntex, Inc. is considering an investment in one of two common stocks. Given the information that follows, which investment is better, based on the risk (as measured by the standard deviation) and return? Common Stock A Probability Return 0.35 12% 0.30 17% 0.35 20% Common Stock B Probability Return 0.15 - 4% 0.35 7% 0.35 15% 0.15 21% a. Given the information in the table, the expected rate of return for stock Ais %. (Round to two decimal places.)