Which statement about VLAN operation on Cisco Catalyst switches is true?

A.
When a packet is received from an 802.1Q trunk, the VLAN ID can be determined from
the source MAC address and the MAC address table.

B.
Unknown unicast frames are retransmitted only to the ports that belong to the same
VLAN.

C.
Broadcast and multicast frames are retransmitted to ports that are configured on different
VLAN.

D.
Ports between switches should be configured in access mode so that VLANs can span
across the ports.

Explanation:
Each VLAN resides in its own broadcast domain, so incoming frames with unknown
destinations are only transmitted to ports that reside in the same VLAN as the incoming
frame.