Which two statements are TRUE ?

A.
Address Family identifier (AFI ) field carries the identity of the Network Layer ports for which the BGP speaker intends to advertise multiple paths

B.
Address Family identifier (AFI ) carries the identity of the Network Layer protocol for which the BGP speaker intends to advertise multiple paths

C.
Subsequent Address Family identifier (SNFI ) provides additional information about the type of the Network Layer ports carried in the BGP update

D.
Subsequent Address Family identifier (SAFI ) provides additional information about the type of the Network Layer Reachability Information carried in the attribute