Refer to the exhibit. Based on the show outputs, which condition could be preventing the P1 router from establishing TDP adjacency with its neighbor over the s0/0.211 and s0/0.212 subinterfaces?
A.
The s0/0.211 and s0/0.212 subinterfaces line protocol are in the down state.
B.
The P1 router cannot establish a TCP session with its neighbors.
C.
The P1 router is missing the mpls label protocol LDP command.
D.
The show mpls tdp neighbor command needs to be used to view the TDP neighbor status.