Companies have learned a great deal regarding how to successfully conduct reverse auctions. Which of the following is NOT a best practice? a. Have at least three competitive suppliers that are willing to participate. b. Try to specify the items in the RFQ as precisely as possible. c. Make sure your internal team is familiar with the reverse auction process. d. Try to keep communication with suppliers at a minimum prior to the auction. e. More qualitative factors can be factored in the auction by weighing quotes accordingly