Supply Chain Management Effectiveness Is Driven Primarily by the Organization's

Supply chain management effectiveness is driven primarily by the organization's ability to manage the:

A) internal link between supply management and its internal customers.
B) internal link between supply management and senior management.
C) internal and external links of customers, the buying organization and suppliers.
D) external link between a buying organization and its key suppliers.
E) external link between a buying organization and its key customers.