Which of these is true regarding the configuration and application of port access control lists？ （）

• A、PACLs can be applied in the inbound or outbound direction of a Layer 2 physical interface. 
• B、At Layer 2， a MAC address PACL will take precedence over any existing Layer 3 PACL.
• C、When you apply a port ACL to a trunk port， the ACL filters traffic on all VLANs present on the trunk port.
• D、PACLs are not supported on EtherChannel interfaces.