During the last two decades of the twentieth century:
(a) the poor and the middle-class became worse off, while the rich became significantly richer.
(b) there was a significant rise in real income among working-class americans.
(c) americans saved more and invested less.

Ed participated in a psychology experiment in which he turned pegs on a board for one hour. although the task was very boring, the experimenter said, "i will pay you $1 if you tell the next participant that this experiment is the most exciting experiment that you have ever been in." julie also participated in the same experiment; however, the experimenter offered to pay her $50 to lie to the next participant. according to cognitive dissonance theory, ed will later report that experiment was and julie will report that it was a. boring; exciting b. exciting; boring c. exciting; exciting d. boring; boring