(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 retum? Common Stock A Common Stock B Probability Return Probability Return 0.25 12% 0.10 -6% 0.50 17% 0.40 5% 0.25 18% 0.40 15% 0.10 21% a. Given the information in the table, the expected rate of retum for stock A is %. (Round to two decimal places.)