user@router# show interfaces
xe-0/0/0 {
unit 0 {
family inet {
address 192.168.12.1/24;
}
family mpls;
}
}
xe-0/0/1 {
encapsulation ethernet-ccc;
unit 0 {
family ccc;
}
}
lo0 {
unit 0 {
family inet {
address 1.1.1.1/32;
} }
}
[edit]

user@router# show protocols
mpls {
interface all;
}
ospf {
traffic-engineering;
area 0.0.0.0 {
interface all;
}
}
ldp {
interface all;
}
l2circuit {
neighbor 2.2.2.2 {
interface xe-0/0/1.0 {
} }
}

Click the Exhibit button.
In the exhibit, which configuration element is missing to bring up the Layer 2 circuit?

A.
the route target

B.
the virtual circuit ID

C.
a targeted LDP session

D.
an MPLS LSP

Explanation: