A Former Supervisor Has Already Agreed to Be One of Your

A former supervisor has already agreed to be one of your references. What should you do after a job interview?

A) Do nothing. Your former supervisor will let you know if he or she is contacted.
B) Send your former supervisor a cheque to compensate him or her for the time it will take to serve as your reference.
C) Write an e-mail message to your former supervisor to tell him or her about the position and company and to review what you would like him or her to stress to the prospective employer.
D) Ask your former supervisor to call the employer immediately so that your reference comes in before anyone else's.