How would you configure IS-IS process TEST to support MPLS Traffic Engineering extensions on level
1 and 2 that are intending to run a tunnel across TenGigE 0/0/0/0?

A.
mpls ldp traffic-eng level-1-2
mpls traffic-eng router-id 1.1.1.1
router isis TEST
interface Ten 0/0/0/0
address-family ipv4 unicast

B.
router isis TEST
net 49.0001.0001.0001.0001.00
address-family ipv4 unicast
metric-style wide
mpls traffic-eng router-id 1.1.1.1
mpls traffic-eng level-1-2
interface Ten 0/0/0/0
address-family ipv4 unicast

C.
router isis TEST
net 49.0001.0001.0001.0001.00
address-family ipv4 uni
metric-style wide
interface Ten 0/0/0/0
address-family ipv4 unicast
mpls traffic-eng router-id 1.1.1.1
mpls traffic-eng level-1-2

D.
mpls ldp
router isis TEST
interface Ten 0/0/0/0
address-family ipv4 unicast
mpls traffic-eng level-1-2
mpls traffic-eng router-id 1.1.1.1

Explanation: