Security A has an expected rate of return of 6 percent, a standard deviation of returns of 30 percent, a correlation coefficient with the market of -0.25, and a beta coefficient of -0.5.
Security B has an expected return of 11 percent, a standard deviation of returns of 10 percent, a correlation with the market of 0.75, and a beta coefficient of 0.5. Which security is more risky? Why?