A procurement audit is a structured review of the procurement process from procurement planning through contract administration．What is the primary objective of a procurement audit ？（）
A．Determine the issues with your present contract so that the contract terms can be modified or improve
B．Identify successes and failures that warrant transfer to other procurement items on this project or to other projects within the performing organizatio
C．To ensure that the seller is following all the terms listed in the contrac
D．To ensure that the buyer is following all the terms listed in the contrac
