scenario:

Bull market:Probability of occuring is 0.25, return on asset a=40%

average market:Probability of occuring is 0.50,return on asset a=25%

Bear market:Probability of occuring is 0.25, return on Asset a= -15%

a)calculate the expected rate of return

b)calculate the standard deviation of the expected return

c)The expected return for Asset B is 18.32% and the standard deviation for asset B is 19.51%.Based on the results from A) and B), which asset would you add to your portfolio?