Refer to the exhibit.
Some of your customers are reporting poor network performance when they use FTP to transfer large data files across your MPLS VPN core. Recently, some backbone links in your MPLS VPN core have been upgraded from POS OC-48 to the new 10 Gigabit Ethernet. You have collected the output of the traceroute mpls ipv4 command with the remote PE as Destination. All devices are running cisco IOS. What must be fixed in network to resolve the issue?
A.
MPLS should be enabled on router ID 103.103.103.2.
B.
MTU on 78.78.78.2 has to be reduced to 4072.
C.
Exp is set to 0, which causes FTP traffic to be dropped.
D.
MTU on 110.110.110.1 should be changed to 4072.