Which of the Following Is an Example of Negative Reinforcement

Multiple Choice

Which of the following is an example of negative reinforcement?

A) Marty knocks over his mother's prize aspidistra so she sends him to his room for the rest of the day.
B) Peter comes in late from his lunch for the third time in one week and is fired from his job.
C) Tara takes an aspirin, and 20 minutes later her headache begins to go away.
D) Gwen mows the lawn and her dad takes her out for an ice cream.