Which Design Consideration Must Be Made When Dual VEdge Routers

Which design consideration must be made when dual vEdge 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 vEdge over the other.
C) Traffic must be symmetrical as it egresses the vEdges and returns from remote sites for DPI to function properly.
D) Configure BFD between vEdge routers to detect sub-second link failures.