Question: How do you convert a recursive m:m relationship into relational tables? A) duplicate the primary key twice inside the same table B) duplicate the primary

How do you convert a recursive m:m relationship into relational tables? A) duplicate the primary key twice inside the same table B) duplicate the primary key once inside the same table C) create a junction table and duplicate the primary key twice in the junction table D) create a junction table and duplicate the primary key once in the junction table

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