What is a characteristic of a VLAN map that does not contain a match clause?

A.
implicit deny feature at end of list

B.
implicit forward feature at end of list

C.
can only be implemented by the input direction within the VLAN

D.
can only be implemented by the output direction within the VLAN

Explanation:
If there is a match clause for that type of packet (IP or MAC) in the VLAN map, the default action is
to drop the packet if the packet does not match any of the entries within the map. If there is no
match clause for that type of packet, the default is to forward the packet.
Reference:
http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.2/31sga/configuration/guide/secur
e.html