A tagged frame arrives on a switch port that is not a tagged member of the VLAN indicated by the frame ID.
What do fundamental VLAN operating rules require the switch to do with that frame?

A.
Ignore the VLAN tag and forward the frame, based on destination MAC address.

B.
Forward a copy of the frame to the default gateway.

C.
Attempt best effort delivery by flooding a copy of the frame to all other VLANs.

D.
Drop the frame.