Refer to the exhibit. Which statement about this output is true? 

Answer options:

A. The router IP 192.168.1.2 sent an implicit null, and the output is from the penultimate LSR.
B. The adjacent router is the egress LSR and has mpls ldp explicit-null configured.
C. The adjacent LSR router configured mpls label range 0.
D. The zero in the second column is the normal behavior of an egress router LSR.

B