单项选择题
A.Check and change the access lists on router RTA
B.Configure the auto summary command under router eigrp 1 on router RTA
C.Configure subinterfaces on the spoke routers and assig n different IP address subnets for each subinterface
D.Issue the no ip split horizon command on router RTA
E.Issue the no ip split horizon eigrp 1 command on router RTA
F.Configure a distribute list on router RTA that allows it to advertise all r outes to the spoke routers