A supply chain management (SCM) system is an IT system that supports supply chain management activities by:
选项：

A: helping decision makers compile useful information to identify and solve problems and make decisions.
B: automating the tracking of inventory and information among business processes and across companies.
C: collecting, storing, modifying, and retrieving the transactions of an organization.
D: providing easy access to both internal and external information relevant to meeting the strategic goals of the organization.A supply chain management (SCM) system is an IT system that supports supply chain management activities by automating the tracking of inventory and information among business processes and across companies.