A bond has an average return of 11.2 percent and a standard deviation of 14.6 percent. What range of returns would you expect to see 68 percent of the time on this security?

-3.4 percent to 25.8 percent

-2.5 percent to 13.9 percent

18 percent to 43.9 percent

-3.4 percent to 27.8 percent

18 percent to 40.1 percent