While troubleshooting an EIGRP routing problem you notice that one of the company routers havegenerated a large number of SIA messages. What are two possible causes for EIGRP Stuck-In-Active routes？（）

A.Some query or reply packets are lost between the routers

B.The neighboring router starts receiving route updates from this router

C.A failure causes traffic on a link between two neighboring routers to flow in only one direction（unidirectional link）

D.The neighboring router stops receiving ACK packets from this router