Current Attempt in Progress

Stocks A$,$ B$,$ and C have expected returns of $20$ percent, $20$ percent, and $16$ percent, respectively, while their standard deviations are $40$ percent, $20$ percent, and $20$ percent, respectively. If you were considering the purchase of each of these stocks as the only holding in your portfolio and the risk$-$free rate is $0$ percent, which stock should you choose? $($Round answers to $2$ decimal places, e$.$g$.15\mathrm{.}25.)$

Coefficient of variation of Stock A $$

Coefficient of variation of Stock B $$

Coefficient of variation of Stock C $$

Choose $$