In Microsoft Dynamics AX 2012, what is the purpose of the LegacyId property of a new element created in the Application Object Tree (AOT)?
A. LegacyId is not used for a new element.
B. LegacyId holds an installation-specific identifier.
C. LegacyId is assigned a value later by the system.
D. LegacyId holds the same value as the ID property.
