Which of the Following Would Not Be Considered an Example

Which of the following would not be considered an example of consideration?

A) A promise to stay in a job until a particular project is completed.
B) A promise to take care of your elderly grandmother in return for her payment to you of $2,000 per month.
C) A promise to settle a sexual harassment case you filed against your supervisor and employer.
D) A promise to stop drinking alcohol during exam week (assuming you are of legal drinking age) .
E) A promise to pay your employees as required by law.