You Graduated from College Two Years Ago and Began Working

Multiple Choice

You graduated from college two years ago and began working at Hampstead Electronics. You have received good performance evaluations and a raise. You just found out that your organization has hired a recent college graduate with no experience at a higher salary than you are now making. You consider this an unfair act and resolve to do something about it.
-Which of the following theories best describes such a situation?

A) equity theory
B) two-factor theory
C) goal-setting theory
D) theory of needs
E) self-determination theory