Portfolio a Has a Beta of

Portfolio A has a beta of .2 and an expected return of 14%. Portfolio B has a beta of .5 and an expected return of 16%. The risk-free rate of return is 10%. If you manage a long-short equity fund and want to take advantage of an arbitrage opportunity, you should take a short position in portfolio ________ and a long position in portfolio ________.

A) A; A
B) A; B
C) B; A
D) B; B