luda002

First you calculate the value of the stock, which is 60%x(25*0,90) + 40%x(25*1,15) which givesm you 25. Then u calculate the standard deviation which is sqrt(0,6*exp(2522,5) + 0,4*exp(28,7525)) = 3,06. 25+3 = 28, 253 = 22 so the correct answer is C