Problem $9-8$ Risk versus Return $($LG$9-4)$

Rank the following three stocks by their risk$-$return relationship, best to worst. Night Ryder has an average return of $12$

percent and standard deviation of $35$ percent. The average return and standard deviation of WholeMart are $13$ percent and

$26$ percent; and of Fruit Fly are $18$ percent and $42$ percent.