You Want to Turn Down a Vendor's Proposal Because It

You want to turn down a vendor's proposal because it does not meet your requirements. Which of the following statements would be best to conclude your message?

A) Sorry, we cannot grant you this order.
B) Your proposal is rejected because it does not match our requirement.
C) We hope that you will consider submitting a proposal during our next round of requests, which begins in the next three months, as your current specifications seem better suited for our next requirement.
D) We are extremely sorry to inform you that we have granted this order to some other vendor.
E) We found that the bids submitted by several other vendors were better than that submitted by you.