Which one of these statements regarding intraconfederation EBGP sessions is correct?

Which one of these statements regarding intraconfederation EBGP sessions is correct?

A.
Intraconfederation EBGP neighbors must be directly connected.

B.
An intraconfederation EBGP session behaves like an IBGP session when propagating routing updates.

C.
Member-AS numbers are removed when a router sends a BGP update over an intraconfederation EBGP session.

D.
Updates from an intraconfederation EBGP neighbor are subject to the BGP split horizon rule.

E.
Intraconfederation EBGP sessions must be established over loopback interfaces.