Which statements are correct for forwarding traffic into MPLS TE tunnels？（）
Autoroute causes the tunnel to be treated as a directly connected link to the head-end.
B. Autoroute causes the TE head-end to establish IGP adjacency with the tail-end over the tunnel.
C. Forwarding adjacency makes the TE head-end node advertise the Tunnel LSP into the IG
D. Forwarding adjacency supports unequal cost load balancing over multiple TE tunnels.
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