Consider the following information: Rate of Return if State Occurs State of Economy Recession Normal Boom Probability of State of Economy 0.20 0.50 0.30 Stock A 0.05 0.09 0.14 Stock B -0.18 0.15 0.33 Required: Given that the expected return for Stock B is 13.800%, calculate the standa deviation for Stock B. (Do not round your intermediate calculations.) 12.52% 17.21% 18.59% 16.82% 18.42%