Stock A's beta is 0.5 and Stock B's beta is 1.5. Which of the following statements must be true about these securities? (Assume market equilibrium.)

		When held in isolation, Stock A has greater risk than Stock B.
		Stock B must be a more desirable addition to a portfolio than Stock A.
		Stock A must be a more desirable addition to a portfolio than Stock B.
		The expected return on Stock A should be greater than that on Stock B.
		The expected return on Stock B should be greater than that on Stock A.