Which of the following statements about the division of OSPF protocol area is wrong?
A . Area 0 is the backbone area, and other areas must be connected to this area
B . The LSDBs in the routers in the same OSPF area are completely consistent
C . Dividing OSPF areas can reduce the LSDB scale of some routers
D . Only ABR can be used as ASBR
Answer: D