In Festinger and Carlsmith's classic study of cognitive dissonance,which group of subjects experienced both a high level of cognitive dissonance and exhibited more attitude change

A)  subjects who were offered $20 to "lie"
B)  subjects who were offered $1 to "lie" 
C)  subjects who were not paid
D)  subjects who were not monitored

Festinger and Carlsmith's classic study of cognitive dissonance found that subjects who were paid only $1 to "lie" about the experiment experienced a higher level of cognitive dissonance than those who were paid $20 or not paid at all. These subjects also exhibited more attitude change as a result of the dissonance they experienced.