Tabitha a client of Top Tech Investment Bank needed information on two stocks that she will be including in a portfolio. Find the portfolio return, variance, and standard deviation and provide Tabitha with an explanation of the results. The information for the shares is below. (10 Marks) Securities Weights D Covariance IGL, FGK = -5 IGL FGK 0.75 0.25 5 7 15 28 Remember to show ALL your workings; marks are allocated based on the details provided.