What Did Correll and His Associates Find in Their Research

What did Correll and his associates find in their research into police officers who confront white and black suspects?

A) Black and white subjects were quicker to shoot at armed black suspects than armed white suspects.
B) Subjects were able to quickly distinguish when suspects were holding a cell phone instead of a gun.
C) Only white subjects showed different responses based on the skin color of the suspects.
D) Time of day was the major factor that impacted subjects' responses.