Regarding the special area of ​​OSPF, the wrong description is:

 Regarding the special area of ​​OSPF, the wrong description is:
A . Totally Stub Area allows the ABR to advertise the default three-type LSA, but does not accept five-type LSA and refined three-type LSA
B. The difference between the NSSA Area and the Stub area is that this area allows the introduction of external routes of the autonomous system, and the ABR issues an LSA7 advertisement to this area
C. The difference between the Stub Area and the Totally stub area is that the Stub area allows fine-grained routing information between areas.
D. The difference between the Totally Stub area and the NSSA area is that the Totally Stub area does not accept inter-domain routing information

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Answer: B