Question: If a 1:M relationship is optional on the 1 side and mandatory on the M side, which of the following is true? The resulting foreign

If a 1:M relationship is optional on the 1 side and mandatory on the M side, which of the following is true?

The resulting foreign key can have null (empty) values

The resulting foreign key cannot have null (empty) values

The resulting foreign key must have null (empty) values

No foreign key is created as a result of mapping such a relationship

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