Dustin Recently Completed the Artistic Reasoning Test (ART)for the Third

Multiple Choice

Dustin recently completed the Artistic Reasoning Test (ART) for the third time in four months.The first time he took the test,his score was near the middle of the scale.The second time,he scored near the top of the scale; but for the most recent test,he scored near the bottom of the scale.What do Dustin's scores indicate about the test

A)  It has not been properly standardized. 
B)  It is measuring something other than artistic reasoning skills. 
C)  It has poor construct validity. 
D)  It has low reliability.