Which of the Following Is True About Reducing Prejudices

Which of the following is true about reducing prejudices?

A) Long-term contact and collaboration in neighborhoods, schools, and communities may be the best way to reduce prejudices.
B) Children assigned to cooperative learning groups with peers of diverse backgrounds have fewer prejudices even with regard to out-group members who are not part of the learning teams.
C) Classrooms that expose children to broad ethnic diversity often cause children to form negative biases about out-group members.
D) The more children believe that personalities are fixed, the more they report liking and perceiving themselves as similar to members of disadvantaged groups.