Which of the following statements about the working principle f LDAP FRR are true?

Which of the following statements about the working principle f LDAP FRR are true?
A . After LDP FRR is enabled, a backup LSP is generated both the primary and backup LSPs are stored in the forwarding table.
B . LDP TFRR can be deployed on the ingress node and the intermediate node. The primary and backup LSPas are recorded in the ILM table on the intermediate node and on the FIB table on the ingress node.
C . After LDP FRR enable, a backup can degenerated for a primary LSP to prevent serious packet loss during fats flapping of the primary LS
E . Multiple LSPs can be up on the ingress node, that is entries about multiple backup LSPs are generated in the forwarding table according to the priority of the FRR, implementing multi-layer protection.

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Answer: C