In a Study of the Impact of Self-Efficacy Beliefs on College

In a study of the impact of self-efficacy beliefs on college performance,

A) students who had higher self-efficacy did better than their peers.
B) high or low self-efficacy did not have an impact on college performance.
C) higher self-efficacy only mattered for those who did less well in high school than their peers.
D) though there was an initial relationship between self-efficacy and college performance, the correlation disappeared over time.