Harber's Experiment Concludes That the Positive Feedback Bias Represented in His

Harber's experiment concludes that the positive feedback bias represented in his data is most likely due to:

A) the automatic activation of a schema for a minority group.
B) legal concerns and potential lawsuits brought forward by minorities.
C) the liabilities of criticizing content may arouse whites' intergroup concerns about appearing racist to others, or of violating their own egalitarian values.
D) the economic costs on the educational system for additional educational enhancement programs.