The Term 'Sleeper Effect' Refers To

The term 'sleeper effect' refers to:

A) a greater change in attitudes after the message is played while subjects sleep
B) that tendency to forget the message after some passage of time
C) situations where a person remembers the persuasive message but not the source of that message
D) situations where a person remembers the source of a message but not the message itself
E) the tendency to forget a persuasive message after going to sleep