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 LSA