Which of the following would be the LEAST appropriate in the closing paragraph of a negative message?

a. "Let us know if model A01 would be a suitable substitution."
b. "Our layaway plan will enable you to purchase all the clothes the children need for school."
c. "We hope our decision meets with your approval."
d. "If the last week in February would be acceptable,I could schedule an afternoon workshop as well."

All the information I have in my textbook is:1-If you have a good alternative,refer to it in your ending.2-The best endings look to the future.3-Avoid endings that seem insincere.
So,a. is alternative and looks like the good ending.Another answers make me confuse.

3 answers

b. Yes, a is good but you are to select the LEAST appropriate.

Sra
I think about c.
It doesn't emphasize any benefits.There is no alternative also.And I don't think that it can encourage the reader.
I agree with you that C is the least appropriate.