Which two elements help Cisco FabricPath mitigate Layer 2 loops if they happen in the Layer 2 MP network?

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As part of a new network design documentation, you are required to explain the reason for choosing cisco FabricPath for Layer 2 loop avoidance.

Which two elements help Cisco FabricPath mitigate Layer 2 loops if they happen in the Layer 2 MP network? (Choose two)
A . MAC tunneling
B . IS-IS multipath
C . RPF check
D . TTL header

Answer: C,D