Practice Question Investments X, Y, and Z all have the following characteristics: Y Expected return 8% 8% Std. dev. of returns 6% 6% Skewness 1.0 0.0 Excess kurtosis -0.5 0.0 z 8% 6% 0.1 0.8 For an investor who is most concerned about not losing principal, the best investment and the worst investment are likely to be, respectively: A. B. C. Best Y X Worst Z X Y