Which of the Following Is an Example of a Temporal

Which of the following is an example of a temporal comparison that would enhance self-esteem?

A) Joan compares herself to her roommate, who has a much lower GPA than she does.
B) Xavier compares himself to his roommate, who has a much higher GOA than he does.
C) Anna compares her present GPA to her freshman year GPA, which was much lower.
D) Rod compares his present GPA to his freshman year GPA, which was much higher.