Which AEP feature should be used to meet this requirement?

A company collects customer mobile numbers into AEP from multiple sources. One of the sources does not provide reliable dat

a. The company will only use the unreliable data source as a backup source.

Which AEP feature should be used to meet this requirement?
A . Union schema
B. Identity namespace
C. Merge policy

Answer: C

Explanation:

Merge policy is a feature that allows users to define how data from different sources should be merged into a single profile. Users can specify the priority of data sources and the rules for resolving conflicts. This way, the company can use the unreliable data source as a backup source only when the other sources do not provide the mobile number.