Please answer all, thank you!

a. If the returns of assets V and W are perfectly positively correlated (correlation coefficient +1), all possible portfolio combinations will have: (Select the best answer below. O A. a range of expected return between 5% and 10% and risk between 8% and 13%. O B. a range of expected return between 8% and 13% and risk between 10% and 0%. O C. a range of expected return between 8% and 13% and risk between 10% and less than 5% but greater than 0%. O D. a range of expected return between 8% and 13% and risk between 5% and 10%. b. If the returns of assets V and Ware uncorrelated (correlation coefficient 0), all possible portfolio combinations will have (Select the best answer below. O A. a range of expected return between 5% and 10% and risk between 8% and 13%. O B. a range of expected return between 8% and 13% and risk between 10% and less than 5% but greater than 0%. O C. a range of expected return between 8% and 13% and risk between 5% and 10%. O D. a range of expected return between 8% and 13% and risk between 10% and 0%