多选题Which three statements about OSPF partial SPF are true？（）AIf it is triggered by Type 4， all Type 4 LSAs that announce a certain ASBR and all Type 5 and 7 LSAs are processedBIf it is triggered by Types 5 and 7， all Type 5 and 7 LSAs that contribute to a certain destination are processed.CIf it is triggered by Type 2， all Type 2 LSAs that contribute to a certain destination are processed.DIf it is triggered by the change of Type 3， 4， 5， and 7 LSAs.EIf it is triggered by the change of Type 2， 3， 5， and 7 LSAs
多选题
Which three statements about OSPF partial SPF are true？（）
A
If it is triggered by Type 4， all Type 4 LSAs that announce a certain ASBR and all Type 5 and 7 LSAs are processed
B
If it is triggered by Types 5 and 7， all Type 5 and 7 LSAs that contribute to a certain destination are processed.
C
If it is triggered by Type 2， all Type 2 LSAs that contribute to a certain destination are processed.
D
If it is triggered by the change of Type 3， 4， 5， and 7 LSAs.
E
If it is triggered by the change of Type 2， 3， 5， and 7 LSAs
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