Which design consideration must be made when dual WAN Edge routers are deployed at a branch site?

Which design consideration must be made when dual WAN Edge routers are deployed at a branch site?
A . Use BGP AS-path prepending to influence egress traffic and use MED to influence ingress traffic from the branch.
B. HSRP priorities must match the OMP routing policy to prefer one WAN Edge over the other.
C. Traffic must be symmetrical as it egresses the WAN Edges and returns from remote sites for DPI to function properly.
D. Configure BFD between WAN Edge routers to detect sub-second link failures.

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Answer: A