Which of the following are not true OSPF LSA rules？（）

• A、OSPF LSA type 5 triggers an LSA type 7 at an ABR between an NSSA and the backbone area
• B、OSPF LSA type 1 triggers an LSA type 3 at an ABR.
• C、OSPF LSA type 7 triggers an LSA type 5 at an ABR between an NSSA and the backbone area
• D、OSPF LSA type 3 triggers an LSA type 4 at an ABR.
• E、OSPF LSA type 5 triggers an LSA type 7 at an A5BR but only in N5SAs
• F、OSFP LSA type 2 triggers an LSA type 3 at an ABR