Suppose You Overhear a Group of Students Discussing the Results

Suppose you overhear a group of students discussing the results of their Psychology midterm.Based on current research findings, which of the following statements would be made by the student with an external achievement attribution?

A) "I can't understand her during the lecture because she talks too fast."
B) "I was tired because I was called in to work the graveyard shift the night before."
C) "The test was too hard and was unfair."
D) "I am never going to learn this material; I am no good at Psychology."