Stock A's beta is 1.7 and Stock B's beta is 0.7. Which of the following statements must be true about these securities? (Assume market equilibrium.) When held in isolation, Stock A has more risk than Stock B OB Stock A must be a more desirable addition to a portfolio than Oc The expected return on Stock A should be greater than that ons OD Stockmust be a more desirable addition to a portfolio than A