Which feature allows an MPLS TE Tunnel to be used by an IGP at the headend of the tunnel:
A. MPLS TE link management
B. MPLS TE auto-route announce
C. generalized MPLS
D. MPLS TE Forwarding Adjacency
E. Differentiated Service TE
Which feature allows an MPLS TE Tunnel to be used by an IGP at the headend of the tunnel: