Which of the Following Is an Example of Repression

Which of the following is an example of repression?

A) Gustavo does not remember being humiliated by his football coach.
B) Bernard asks a professor to raise his grade; when the professor refuses, Bernard throws a temper tantrum.
C) Hua explains that he ate an entire chocolate cake so that it wouldn't spoil in the summer heat.
D) Paul redirects anger from his boss to his dog.