Which of the Following Examples Explains the Equity Theory

Which of the following examples explains the equity theory?

A) Sharon feels that she should have received a higher pay increase compared to her colleague as she finds that her performance was superior to theirs.
B) Alice feels that obtaining a high score in the entrance test would secure her an admission in a top business school.
C) Michael aims to complete three projects that will save time and costs for his bank's loan processing operations during the year.
D) Thomas enjoys socializing and joins a fitness club where he can interact with a large number of people.