Joshua Greene's Study of How Our Minds and Bodies React

Joshua Greene's study of how our minds and bodies react to

A) study subjects were largely able to agree on what was the best of possible evils in a scenario.
B) human decisions are mostly rational, not impacted by emotion.
C) magnetic imaging suggests emotional scenarios require less use of our brains compared to unemotional scenarios.
D) humans use rationale and emotion to make decisions similar to how a computer would.