In a situation in which you have put a high degree of effort into attaining a goal that you then come to feel may not have been worth all of the effort,according to cognitive dissonance theory,you are most likely to

A) reevaluate the amount of effort you put in, and judge it to be less than it really was
B) reevaluate the goal you attained, and convince yourself it was, in fact, worth it
C) decide to put less effort into attaining goals in the future
D) decide to put in no effort into your next activity