Which of the following are characteristics of how row access policies can be applied to external tables? (Choose three.)

Which of the following are characteristics of how row access policies can be applied to external tables? (Choose three.)
A . An external table can be created with a row access policy, and the policy can be applied to the VALUE column.
B . A row access policy can be applied to the VALUE column of an existing external table.
C . A row access policy cannot be directly added to a virtual column of an external table.
D . External tables are supported as mapping tables in a row access policy.
E . While cloning a database, both the row access policy and the external table will be cloned.
F . A row access policy cannot be applied to a view created on top of an external table.

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Answer: A,B,C