Sarah Has Just Gotten into a Sorority That She Has

Sarah has just gotten into a sorority that she has always wanted to be in. However, she just saw one of the members bring a copy of the upcoming biology exam to the sorority president that she obtained from the instructor's student worker. Sarah is upset that her "sorority" is engaging in unethical behavior. However, she decides to keep quiet so her loyalty will allow her to effect a change and eliminate this unethical behavior by working within the organization. Sarah has resolved her cognitive dissonance by

A) adding consonant thoughts.
B) decreasing her amount of perceived choice.
C) changing her attitude.
D) changing her behavior.