Security A has a beta of 1.0 and an expected return of 12%.

Security A has a beta of 1.0 and an expected return of 12%. Security B has a beta of 0.75 and an expected return of 11%. The risk-free rate is 6%.Explain the arbitrage opportunity that exists and how an investor can take advantage of it.Give specific details about how to form the portfolio, what to buy and what to sell.