What Is Suggested by the Research by Steele and Colleagues

What is suggested by the research by Steele and colleagues on racial stereotypes and test performance

A)  The effects of stereotype vulnerability are greatest for white students in all situations. 
B)  Stereotype vulnerability appears to impair minority group members' test performance. 
C)  Members of minority groups tend to perform lower on tests in all circumstances. 
D)  Both black and white subjects are susceptible to the effects of stereotype vulnerability.