Which of the Following Is an Example of How Discriminative

Which of the following is an example of how discriminative stimuli can encourage cheating?

A) A child who makes silly faces during class is reprimanded by the teacher,but his classmates tell him how funny he is.
B) A teenager is punished for swearing at home,but still swears when she is with her friends at school.
C) A drug user is given a warning for his first offense and jail time if he repeats the offense.
D) A politician who is exposed for illegally obtaining money one way will then find another way to obtain the money.