What is benefits of Central Creation and Maintenance of Supplier Master Data?

What is benefits of Central Creation and Maintenance of Supplier Master Data?
A . Reduced procurement costs based on global visibility of relationships
B . Improved cycle time for new contract creation by creating and maintaining supplier master data as a governed process across supplier management processes
C . Centralized supplier management as part of procurement to ensure Service Level Agreements (SLAs) are met, simplify contract management, and mitigate risk
D . SAP MDG allows you to define workflows and roles for these central processes in order to involve the right people when they should contribute

Answer: A,B,C