Which of the Following Is NOT a Rule for Ethical

Which of the following is NOT a rule for ethical behavior for interviewers?

A) Do not disclose confidential information (except to those who must know in order to make the hiring decision) without first obtaining the interviewee's permission.
B) Use questions that are designed to help the interviewee feel comfortable and do well in the interview.
C) Do not ask an interviewee to discuss mistakes he has made on the job.
D) Do not attempt to make a job offer unless you are certain that the company will back that offer.