Consider the following probability distribution for stocks A and B: State Probability Return on Stock A Return on Stock B 1 0.15 8 % 8 % 2 0.20 13 % 7 % 3 0.15 12 % 6 % 4 0.30 14 % 9 % 5 0.20 16 % 11 % The expected rates of return of stocks A and B are and , respectively.