Which one of the following statements related to unexpected returns is correct? Multiple Choice All announcements by a firm affect that firm's unexpected returns. Unexpected returns over time have a negative effect on the total return of a firm. O Unexpected returns are relatively predictable in the short-term. Unexpected returns generally cause the actual return to vary significantly from the expected return over the long-term Your portfolio is comprised of 36 percent of Stock X, 18 percent of Stock Y, and 46 percent of Stock Z. Stock X has a beta of 1.19, Stock Y has a beta of.87, and Stock Z has a beta of 1.26. What is the beta of your portfolio? Multiple Choice 1.16 1.09 1.13 1.18