The Results from the Classic Experiment Involving Psychology Students Randomly

The results from the classic experiment involving psychology students randomly assigned to work either with "bright" rats or with "dull" rats suggest that:

A) labelling students as "gifted" has negative effects on their social lives.
B) students identified as "not gifted" actually may work harder academically due to increased motivation.
C) labelling students as "gifted" actually has unintended negative consequences on academic performance.
D) students labelled as gifted do better in school because teachers treat them differently.