The geometric average of 4%, 9% -3%, and 9.6% is O 1.205% 4.78% 4 90% 3.33% Standard deviation determines Total risk of a security Unsystematic risk of a security Systematic risk of a security The premium of a security Mohammed Hadi is a portfolio Manager and he wants to calculate the portfolio's standard deviation for his client given the following information: A 40% Os = 20$ A=0.47 WA 35% W.65% The portfolio's standard deviation is closest to 0.181 0.2653 0.0704 O 0223 O 0.0981