We know the following expected returns for stocks A and B$,$ given different states of the economy:

State $($s$)$ Probability E$($rA$,$s$)$ E$($rB$,$s$)$

Recession $0\mathrm{.}3-0\mathrm{.}040\mathrm{.}02$

Normal $0\mathrm{.}50\mathrm{.}110\mathrm{.}05$

Expansion $0\mathrm{.}20\mathrm{.}190\mathrm{.}09$ What is the expected return for stock A$?$ What is the expected return for stock B$?$ What is the standard deviation of returns for stock A$?$ What is the standard deviation of returns for stock B$?$