The following statements about the attributes of Isis LSP message are correct

green333xm

The following statements about the attributes of Isis LSP message are correct
A. LSP fast diffusion features, first less than the specified number of LSP spread out, speed up the synchronization process of LSDB
B. By configuring the intelligent timer generated by LSP, the timer can automatically adjust the delay time according to the change frequency of routing information
C. When the link state information increases, the message length of LSP can be increased, so that each LSP can carry more information
D. Reducing the minimum time interval of LSP sent by the interface can speed up the diffusion speed of LSP.

Could you tell me the answer to this question, AB or ABCD? Thank you