What is Prevent creation of duplicates for increased effectiveness and efficiency?

What is Prevent creation of duplicates for increased effectiveness and efficiency?
A . Checked early and embedded in the process
B . High detection quality of matching using Enterprise Search or SAP Data Services
C . Stores data in process in a separated repository, which is transferred to an operational database after the final approval
D . Is flexible enough to respect the distributed responsibilities that exist in a company across various business units

Answer: A,B