multiple choice question I just want to answer a, b, c, d Pllz Faaast help

12 If the retum on the portfolio Ky is equal to 0.16 if stock goes up and 0.04 i stock goes down then the variance on the portfolio Ky is equal to 0.16A asico WWW E 40 DA 0 If the retum on the portfolio Ky is equal to 17.5 % if stock goes up or -7,5% if stock goes down then, the standard deviation on the portfolio Ky is equal to 10% 12 If the retum on the portfolio Ky is equal to 0.16 if stock goes up and 0.04 i stock goes down then the variance on the portfolio Ky is equal to 0.16A asico WWW E 40 DA 0 If the retum on the portfolio Ky is equal to 17.5 % if stock goes up or -7,5% if stock goes down then, the standard deviation on the portfolio Ky is equal to 10%