Which of the Following Explains 'Supply Chain

Multiple Choice

Which of the following explains 'supply chain'? 

A)  A series of companies (links) in which the final stages of production of an economic product take place. 
B)  A series of companies (links) in which the consecutive stages of production of an economic product take place, from primary producer to final consumer. 
C)  A series of companies (links) in which the initial stages of production of an economic product take place. 
D)  A series of companies (links) in which the final stages of production of an economic product take place and the product is distributed to final consumer.