If the Prospect Says "No," Which of the Following Should

If the prospect says "no," which of the following should the salesperson avoid?

A) Display open disappointment and indicate that you would like to return later and present the proposal a second time.
B) Maintain a professional "winning" attitude even though the sale was lost.
C) Prepare the prospect to evaluate competing products.
D) Bring out an important point that was overlooked earlier.
E) Make sure the deal is really dead.