Which of the Following Has Been Shown by Research on the Personal/group

Which of the following has been shown by research on the personal/group discrimi- nation discrepancy?

A) People are more likely to see discrimination when they make judgments on a case-by-case basis rather than in the aggregate.
B) People engage in the PGDD only when the judgment concerns possible discrimination.
C) The PGDD has been found to affect perceptions of both positive and negative attributes.
D) The PGDD is fairly easy to eliminate by asking the right questions.