Option 10A (back-to-back VRF) is an implementation of inter-AS MPLS VPN. Which of four
statements about option 10A are not true? (Choose four.)

A.
MPLS is required between the ASBRs.

B.
ASBR must hold all routing information.

C.
It is a scalable solution.

D.
It is a simple solution.

E.
MP-EBGP is used to exchange routes between ASBRs.