Which of the following description of how to establish a BFD session is wrong?

 Which of the following description of how to establish a BFD session is wrong?
A . BFD sessions can only be established dynamically
B .  Static configuration of the BFD session refers to configuring the BFD session parameters through the command line, including local identifiers and remote identifiers, etc.
C . When dynamically establishing a BFD session, dynamically assign a local identifier.
D . The system distinguishes between static BFD sessions and dynamic BFD sessions by dividing the identifier area.

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Answer: A