Self-Efficacy Is Not the Same as Ability

Self-efficacy is not the same as ability.In what way does self-efficacy predict coping and performance above and beyond how one's ability predicts coping and performance?

A) Circumstances are always ambiguous and unpredictable and hence require coping.
B) Emotions are always ambiguous and unpredictable and hence require suppressing.
C) Self-efficacy is a more important predictor of task performance than is ability.
D) Self-efficacy predicts actual performance, whereas ability predicts only potential performance.