Stacey was invited to become a member of the class project team because the other members knew she had a high GPA and worked hard on all her individual assignments. Although the other members worked diligently to complete their parts, Stacey was not giving her best effort to this team. Which of the following is a possible explanation for Stacey's behavior?
A) social loafing
B) status incongruence
C) role ambiguity
D) group cohesiveness