Which of the following descriptions of the OSPF protocol is wrong?

Which of the following descriptions of the OSPF protocol is wrong?
A . There are four types of connections described by the Router LSA: P2P/TransNet/StubNet/Virtual Link.
B . Each OSPF router uses only one Router LSA to describe the local active connection status of an area.
C . The Link State ID described in the third type of LSA is the router-id of the AB
E . It is only allowed to advertise routing information between the backbone area and the non-backbone area. It is not allowed to directly advertise routing information between non-backbone areas.

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Answer: B