A 2010 Study Investigating Whether Darkness Increases Dishonesty and Self-Interested

A 2010 study investigating whether darkness increases dishonesty and self-interested behavior while completing a math task found:

A) participants in the dimly lit room exaggerated their success on the math task.
B) participants in the brightly lit room exaggerated their success on the math task.
C) participants in the dimly lit room performed worse than participants in the brightly lit room.
D) participants in the brightly lit room performed worse than participants in the dimly lit room.