The higher the standard deviation of returns on a security, the _____ the possibility of a lower return in one year than the average rate of return over many years. Further, the higher the standard deviation of returns on a security, the _____ the potential of a greater return in one year than the average rate of return over many years.

A. higher; higher

B. higher; lower

C. lower; higher

D. lower; lower

E. the standard deviation tells nothing about the expected rate of return.