She gave a cold smile. "Gosh. You caught me, Malfoy. I put wrong answers on the study-guide and hoped nobody in our entire class would notice." She folded her arms. "The reason I didn’t include anything from Bourne is because Snape said he’s wrong and the only reason his textbook was required reading was to highlight what idiots some people are. If you want to add Bourne’s commentary to your answer, be my guest. In fact," she leaned forward, extending her hand, "I have a better idea, why don’t you give me my study-guide back, and write your own answers."