Within an IAM Policy, Can You Add an IfExists Condition

Multiple Choice

Within an IAM policy, can you add an IfExists condition at the end of a Null condition?

A) Yes, you can add an IfExists condition at the end of a Null condition but not in all Regions.
B) Yes, you can add an IfExists condition at the end of a Null condition depending on the condition.
C) No, you cannot add an IfExists condition at the end of a Null condition.
D) Yes, you can add an IfExists condition at the end of a Null condition.