Which three statements about IOS Firewall configurations are true？（）

• A、The IP inspection rule can be applied in the inbound direction on the secured interface.
• B、The IP inspection rule can be applied in the outbound direction on the unsecured interface.
• C、The ACL applied in the outbound direction on the unsecured interface should be an extended ACL.
• D、The ACL applied in the inbound direction on the unsecured interface should be an extended ACL.
• E、For temporary openings to be created dynamically by Cisco IOS Firewall，the access-list for thereturning traffic must be a standard ACL.
• F、For temporary openings to be created dynamically by Cisco IOS Firewall，the IP inspection rule must be applied to the secured interface.