Recent Scholarly Research Demonstrates That Energetic and Well-Planned Efforts by Presidents

Recent scholarly research demonstrates that energetic and well-planned efforts by presidents to influence public opinion

A) can move public responses to opinion polls by about ten percentage points.
B) are likely to have little effect.
C) are far more effective when they concern foreign policy than domestic policy.
D) are far more effective when they concern domestic policy than foreign policy.
E) only occurs during a president's first year in office.