A、On the routing table of R4, the 10.1.1.0/24 route appears as an O E2 route

B、On R4, the 172.16.1.0/24 route has a metric of 20

C、The R3 S0/0 interface should not need the no ip split - horizon eigrp 1 configuration command for the  172.16.1.0/24 route to appear in the routing table of R2 as an D EX route

D、The administrative distance of the 172.16.1.0/24 route in the routing table of R3 is 170

E、On R5, the 4.0.0.0/8 route will have an administrative distance of 120 and a hop co unt of 6