What is true about the following configuration in a PE router? Router bgp 21
address-family ipv4 vrf yellow neighbor 10.3.2.1 remote-as 44 neighbor 10.3.2.1 active

A.
It configures an MP-BGP neighborship to another PE.

B.
It configures an EBGP neighborship to a CE.

C.
It configures an IBGP neighborship with a CE.

D.
It configures an IBGP neighborship to another PE.

Explanation: