Which of the Following Best Explains a 'Buying Consortium

Multiple Choice

Which of the following best explains a 'buying consortium'? 

A)  One company purchases on behalf of another. 
B)  Individual companies created a legally binding arrangement to bundle their purchasing volumes through a joint initiative. 
C)  There is a central purchasing department where corporate contracting specialists operate at the strategic level. 
D)  Individual companies voluntarily bundle their purchasing volumes through a joint initiative.