In JUNOS software, which statement is true regarding the OSPF advertisement of the loopback IP address on the ABR?（）

• A、When Area 0 is active, the loopback interface must be configured in OSPF for it to be advertised.
• B、When Area 0 is active, the loopback address is automatically advertised into other areas.
• C、When Area 0 is active, the OSPF router-id must match the loopback address for the loopback address to be advertised.
• D、When Area 0 is active, the router-id must be configured for the loopback address to be advertised.