问题：

[多选] Which two statements are true regarding EIGRP？（）

A . Passive routes are in the process of being calculated by DUAL.
B . EIGRP supports VLSM，route summarization，and routing update authentication.
C . EIGRP exchanges full routing table information with neighboring routers with every update.
D . If the feasible successor has a higher advertised distance than the successor route，it becomes theprimary route.
E . A query process is used to discover a replacement for a failed route if a feasible successor is not identified from the current routing information.