You are investing for your retirement. You put 60% of you money into stock A, with expected return of 12%, and standard deviation of 20%. The rest is invested in stock B, with expected return of 10%, and standard deviation of 15%. The correlation coefficient between Stock A and Stock B is 0.5. What is the expected return of your retirement portfolio? O 10.8% O 11.2% 18% O 17%