Which of the following statements regarding single area OSPF are correct? (Choose three)
A . An IP address needs to be configured on a loopback interface of each router before configuring an OSPF area.
B . The value of an area can be from 0.0.0.0 to 255.255.255.255.
C . A single area can be configured using any supported area number.
D . All of the links of the network need to be advertised in Area 0.
Answer: BCD