The Company switches are configured to use VTP. What’s true about the VLAN trunking protocol  （VTP）？（）

• A、VTP messages will not be forwarded over nontrunk links.
• B、VTP domain names need to be identical. However，case doesn’t matter.
• C、A VTP enabled device which receives multiple advertisements will ignore advertisements with higher configuration revision numbers.
• D、A device in "transparent" VTP v.1 mode will not forward VTP messages.
• E、VTP pruning allows switches to prune VLANs that do not have any active ports associated with  them.