Here are two assets both offer an 8% return and 20% standard deviation. The correlation between these two assets is "-0.5". What is the expected return of a portfolio that contains 50% of each asset? What is the two assets correlation is +0.5, then what is the expected return of a portfolio that contains 50% of each

8%; 20%

8%; 4%

8%; 8%

8%; 10%