How Did Walton and Cohen (2011)explain the Failure of Information

How did Walton and Cohen (2011) explain the failure of information on belongingness uncertainty to help Caucasian students improve academic performance, as compared to their African-American counterparts?

A) Caucasian students don't experience belongingness uncertainty at all.
B) Caucasian students have less persistent experience of belongingness uncertainty.
C) Caucasian students have more persistent experience of belongingness uncertainty.
D) Caucasian students did not listen to or process the message on belongingness uncertainty.