Consider the Following Probability Distribution for Stocks a and B

Consider the following probability distribution for stocks A and B: $$\begin{array} { c c c c } \text { State } & \text { Probability } & \text { Return on Stock A } & \text { Return on Stock B } \\1 & 0.10 & 10 \% & 8 \% \\2 & 0.20 & 13 \% & 7 \% \\3 & 0.20 & 12 \% & 6 \% \\4 & 0.30 & 14 \% & 9 \% \\5 & 0.20 & 15 \% & 8 \% \\\hline\end{array}$$ The standard deviations of stocks A and B are _____ and _____, respectively.

A) 1.5%; 1.9%
B) 2.5%; 1.1%
C) 3.2%; 2.0%
D) 1.5%; 1.1%