When you fail a test,which attribution is more likely to be made by your roommate about your grade

A)  The test was unfair. 
B)  Most of the class also failed the test. 
C)  The teacher is ineffective. 
D)  You didn't study enough.

This attribution assumes that the individual didn't put in enough effort to prepare for the test, and is the most likely attribution to be made by someone who knows the student and their study habits. The other attributions shift blame away from the individual and are less likely to be made by someone who knows the situation.