Refer to the exhibit. XR2 needs to have LDP configured with PE1. Which configuration achieves this goal?
A. interface
giga 0/0
mpls ip
exit
commit
B. router ospf 1
mpls ldp auto config area 0
exit
commit
C. router ospf 1
area 0 mpls ldp auto config
exit
commit
D. interface giga 0/1
mpls ldp
exit
commit
