As DrTrelawny Marks the First Three Midterms for Her Class,she Notes

Multiple Choice

As Dr.Trelawny marks the first three midterms for her class,she notes that the grades are very high.She then thinks that this class must be exceptionally bright.What is Dr.Trelawny using to make this illogical assumption

A)  gambler's fallacy 
B)  overestimating the improbable 
C)  confirmation bias 
D)  belief in the law of small numbers