Which two additions should be made to help provide some protection?

A client chooses to not block uncategorized websites.

Which two additions should be made to help provide some protection? (Choose two.)
A . A URL filtering profile with the action set to continue for unknown URL categories to security policy rules that allow web access
B . A data filtering profile with a custom data pattern to security policy rules that deny uncategorized websites
C . A file blocking profile attached to security policy rules that allow uncategorized websites to help reduce the risk of drive by downloads
D . A security policy rule using only known URL categories with the action set to allow

Answer: A,D