Which One of the Following Statements Related to Unexpected Returns

Multiple Choice

Which one of the following statements related to unexpected returns is correct?

A) All announcements by a firm affect that firm's unexpected returns.
B) Unexpected returns over time have a negative effect on the total return of a firm.
C) Unexpected returns are relatively predictable in the short-term.
D) Unexpected returns generally cause the actual return to vary significantly from the expected return over the long-term.
E) Unexpected returns can be either positive or negative in the short term but tend to be zero over the long-term.