According to Research, Which of the Following Happens When Presidents

According to research, which of the following happens when presidents use energetic and well-planned efforts to influence public opinion?

A) It can move public responses to opinion polls by about ten percentage points.
B) They are likely to have little effect.
C) They are far more effective when dealing with foreign policy than domestic policy.
D) They are far more effective when dealing with domestic policy than foreign policy.
E) This only works during the president's first year in office.