All of the Following Should Be Covered in Your Sales

All of the following should be covered in your sales presentation, except:

A) Provide a sample of your product to the client.
B) Poise your questions in a way that the customer will have to respond with other than a yes-or-no answer.
C) Be prepared by knowing your product/service inside and out.
D) Delay providing answers to questions so that you can schedule a follow-up meeting.