Question 6 1 pts Portfolio A has a beta of 1.4 and an expected return of 22%. Portfolio B has a beta of 0.7 and an expected return of 20%. The risk-free rate of return is 8%. Does an arbitrage opportunity exist? If so, how could you take advantage of it? (Assume that the borrowing rate is the risk-free rate.) O Yes, buy $X portfolio B and short $X portfolio A O Yes, buy $X portfolio A and short $X portfolio B Yes, buy $2X portfolio B, short $X portfolio A, and borrow $X from the bank No. O Yes, buy $X portfolio A, short $2X portfolio B, and invest $X in the risk free asset