The "Sleeper" Effect in Persuasion Refers to the Fact That

The "sleeper" effect in persuasion refers to the fact that

A) subliminal messages increase persuasion by appealing to the unconscious.
B) people who are sleep-deprived yield easily to social pressures.
C) you might reject an argument at first and agree with it later.
D) people listen more carefully to the logic when they care about the outcome.