Which two statements are true about external BGP neighbor relationships? (Choose two.)

A.
Static routes or an interior gateway protocol is required between EBGP neighbors.

B.
EBGP neighbors must be in different autonomous systems.

C.
EBGP neighbors use TCP port 179 to exchange BGP routing tables.

D.
Loopback addresses should be used between EBGP neighbors.

E.
The BGP split-horizon rule specifies that routes learned via IBGP are never propagated to other EBGP peers.

F.
When an EBGP neighbor receives an update from another EBGP neighbor, it should not forward the update to other EBGP neighbors.