You are investing for your retirement. You put 40% of your money into stock A, with an expected return of 12%, and standard deviation of 20%. The rest is invested in stock B, with an 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? 10.8% 18% 17% 11.2%