4) The risks and returns of A and B shares are given below. Calculate the risk and returns of the portfolios that are formed if the portfolio is created from the two shares with different weights. Stock Expected return St. Var. Corr.Coefficient Port.1 P2 P3 %20 %30 0.5 %80 %50 %30 %16 %24 %20 %50 %70 4) The risks and returns of A and B shares are given below. Calculate the risk and returns of the portfolios that are formed if the portfolio is created from the two shares with different weights. Stock Expected return St. Var. Corr.Coefficient Port.1 P2 P3 %20 %30 0.5 %80 %50 %30 %16 %24 %20 %50 %70