Which of the Following Is True Regarding Regression Toward the Mean

Multiple Choice

Which of the following is true regarding regression toward the mean?

A) when two sets of scores are imperfectly correlated, high scores in the first set will inevitably be lower in the second set
B) it is an inevitable consequence of examining the association between scores on two imperfectly related measures
C) it is a particular problem whenever at least one set of scores is selected for its extremity.
D) A and B
E) B and C
F) all of the above