Which of the Following Best Explains 'Purchasing's Strategic Contribution

Multiple Choice

Which of the following best explains 'purchasing's strategic contribution'? 

A)  The extent to which, by choosing a certain course of action, a previously established goal or standard is met. 
B)  This refers to the relationship between planned and actual costs. 
C)  The savings made against budget allocation. 
D)  The building of superior relationships with best-in-class suppliers across the company's value chain.