Which of the following is the most effective buffer?
a. Your store anniversary would be a great opportunity for our firm to promote its products.
b. We appreciate your long-standing interest in our products.
c. It is with deep regret that I must decline your offer to speak at this year's banquet.
d. Please understand that providing "free" products to a charity is costly to any business.
e. We have received your letter dated January 23.
Answer: B
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