Which two statements are true when the extended system ID feature is enabled? (Choose two.)

A.
The BID is made up of the bridge priority value(two bytes) and bridge MAC address (six
bytes).

B.
The BID is made up of the bridge priority (four bits), the system ID (12 bits), and a bridge
MAC address (48 bits).

C.
The BID is made up of the system ID (six bytes) and bridge priority value (two bytes).

D.
The system ID value is the VLAN ID (VID).

E.
The system ID value is a unique MAC address allocated from a pool of MAC addresses
assigned to the switch or module.

F.
The system ID value is a hex number used to measure the preference of a bridge in the
spanning-tree algorithm.