Which two statements about EIGRP are true？（）
- AEIGRP supports VLSM， route summarization， and routing update authentication.
- BIf the feasible successor has a higher advertised distance than the successor route， it becomes the primary route.
- CPassive routes are in the process of being calculated by DUAL.
- DEIGRP exchanges full routing table information with neighboring routers with every update.
- EA query process is used to discover a replacement for a failed route if a feasible successor is not identified from the current routing information.