Which of the following is NOT a characteristic of a lookup relationship?

With the exception of the user object, a lookup relationship can link an object with itself.

In a lookup relationship, the lookup f‌ields are automatically required.

A lookup relationship does not impact the security of linked objects.

A lookup relationship does not support sharing or roll-up summary fields.

Answer:
In a lookup relationship, the lookup f‌ields are automatically required.

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