15. Which of the following BEST explains the difference between a seller audit during Contract Administration and a procurement audit during Contract Closure? A. The seller audit reviews the products being created, while the procurement audit reviews how well the seller is doing the job B. The procurement audit reviews the products being created, while the seller audit reviews how well the seller is doing the job C. The seller audit reviews the products being created, while the procurement audit is used to examine successes and failures and gather lessons leamed D. The procurement audit reviews the products being created, while the seller audit is used to examine successes and failures and gather lessons leamed