In the following table, returns to two assets $($A and B$)$ are given for different states of nature with the stated probabilities of occurring. Calculate the expected $($mean$)$ return, standard deviation of returns for each asset. Which asset would be considered more risky Base on the CoV?

$\backslash$table$[[$State of Nature,Probability,Return A$,$Return B$],[(1),0\mathrm{.}20,23\%,9\%$