Which of the following description is wrong about the OSPF protocol?

Which of the following description is wrong about the OSPF protocol?
A . When a router receives a NETWORK-Summary-LSA, the router runs the SPF algorithm
B . NETWORK-LSA is used to describe the link state information of the broadcast network segment and the NBMA network segment.
C . A virtual link is a virtual link belonging to the backbone area AREA 0).
D . The Type 4 of LSA is used to describe how to reach the ASBR and contains routing and topology information.

Answer: D

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