Let's say that you are looking at investing in two Stocks A and B. A has a beta of 1.3 and based on your best estimates is expected to have a return of 12%. B has a beta of 0.9 and is expected to earn 9%. If the risk-free rate is currently 4% and the expected return on the market is 11%, determine whether these stocks are worth investing in. Explain thoroughly all your steps.