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 who wore clear glasses performed better than those who wore sunglasses.
B) participants who wore sunglasses performed better than those who wore clear glasses.
C) participants who wore sunglasses shared less money with their partner in a game than participants who wore clear glasses.
D) participants who wore clear glasses shared less money with their partner in a game than participants who wore sunglasses.