Question 11 4 pts Which of the following statements concerning beta are correct? 1. Adding stocks with high betas to a portfolio increases the portfolio's market risk. 11. The higher the beta, the higher the expected return. III. A beta can be positive, negative, or equal to zero. IV. A beta of 0.3 indicates a lower level of risk than a beta of 1.3. I and IV only O II, III and IV only O ll and ill only O I, II, III and IV