Which of the Following Is the Most Effective Close for a Letter

Which of the following is the most effective close for a letter rejecting a job applicant?

A) If you have any questions about our decision, don't hesitate to call.
B) We hope that despite this rejection you will continue to frequent our establishments.
C) Again, we are very sorry that we cannot offer you a position at this time.
D) I wish you the best in your job search. I am confident you will find a match for your skills and interests.