Which of the Following Statements Accurately Describes Research on the Performance

Which of the following statements accurately describes research on the performance of diverse groups compared with homogeneous groups?

A) Initially, the diverse groups performed better because they were more tolerant of each others' differences.
B) Over time, the diverse groups performed worse because they were less tolerant of each others' differences and felt comfortable expressing this discomfort.
C) Initially, the homogeneous groups outperformed the diverse groups, but by the end of the semester, the diverse groups outperformed the homogeneous groups.
D) A and B only above.
E) A, B, and C above.