Which three statements are correct regarding ping mpls command operations? (Choose three.)

Which three statements are correct regarding ping mpls command operations? (Choose three.)
A . MPLS OAM has to be enabled on the router using the mpls oam command.
B . They use a 127/8 address as the destination address in the MPLS echo request packet.
C . They use ICMP echo request and ICMP echo reply packets.
D . They are used to test for a broken LS
F . If there is a broken LSP, instead of using label switching, the packet can still be forwarded based on the destination IP address in the mpls ping echo request packet.

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Answer: A,B,D