Which of these best describes the actions taken when a VTP message is received on a switch configuredwith the VTP mode "transparent"？（）

• A、VTP updates are ignored and forwarded out all ports.
• B、VTP updates are ignored and forwarded out trunks only.
• C、VTP updates are made to the VLAN database and are forwarded out trunks only.
• D、VTP updates are ignored and are not forwarded.