Refer to the exhibit.

AS 100 for ABC sites is used to carry XYZ customer traffic over ISP network. All routing between
CEs to PEs are BGP-based. XYZ site 1 reports that it cannot reach XYZ site 2, although the
destination network is installed in its routing table.
Which statement describes the cause of the problem?

A.
LDP is not running between XYZ-CE1 and ABC_PE1.

B.
LDP is not running between ABC_PE1 and PE1.

C.
ABC_PE1 does not have an inbound label for subnet 6.6.6.6/32.

D.
send-label command is missing from PE1 to ABC-PE1.