At a General Level, What Is the Self-Serving Attributional Bias

At a general level, what is the self-serving attributional bias?

A) the tendency to make internal attributions for one's own behavior, and external attributions for the behavior of others
B) the tendency to make external attributions for one's own behavior, and internal attributions for the behavior of others
C) the tendency to make external attributions for bad things one does, and internal attributions for good things one does
D) the tendency to make internal attributions for bad things one does, and external attributions for good things one does