单项选择题

A. VTP updates are ignored and forwarded out all ports.……

Which of these best describes the actions taken when a VTP message is received on a switch configured with 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.

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