Punjit Works at a Button-Sorting Factory

Punjit works at a button-sorting factory.He feels bad that he can sort only twenty buttons a minute,when the average worker can sort thirty.To feel better about himself,Punjit compares his performance with Brant,who can sort only ten buttons a minute.This is an example of ____.

A) downward social comparison
B) unrealistic optimism
C) the actor-observer effect
D) the fundamental attribution error