When nonadjacent LDP neighbors are used for implementing an MPLS traffic engineering solution, how are the nonadjacent LDP neighbors discovered?
A.
using multicast CR-LSP (constraint-based LSP)
B.
using unicast CR-LSP (constraint-based LSP)
C.
using multicast LDP hello messages
D.
using unicast LDP hello messages
E.
using multihop MP-IBGP
F.
using multihop MP-EBGP