What happens when the Primary Person ID and Secondary Person ID Special Use Type properties are set on a single table?

What happens when the Primary Person ID and Secondary Person ID Special Use Type properties are set on a single table?
A . A mapping is created between the Primary Person within a position and Secondary Person(s) within that position.
B. A Lookup is created in the Lookup tab to join tables with Primary Person ID to a Secondary Person ID(s).
C. A mapping is created between an employee’s identifier and the employee’s assignment(s).
D. A relationship is defined for a parent (primary)/child (secondary) relationship for a supervisor structure.

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Answer: B