Refer to the exhibit.

The branch routers have E1 lines into the Frame Relay service provider network. The exhibit
shows just one branch but the network actually has 30 branches. The Hp 6600 Services routers,
which are the area border routers (ABRs), have E3 lines into the Frame Relay network.
The routers in the exhibit implement Open Shortest Path First (OSPF). They enable OSPF on
networks as follows:
In the area 2, OSPF is enabled on network 10.2.0.0/16
In area 0, OSPF is enabled on network 10.0.0.0/16
The customer requires resilience at the WAN core. Which Design Change best supports that
requirement?

A.
At each branch, add a redundant link between the switch and the router.

B.
Add a Gigabit link between the HP 6600 Series routers with a network in area 0 and area 2.

C.
Place the HP 6600 Series routers in an intelligent Resilient Framework (IRF) group.

D.
On each branch router, add a floating static route to one of the ABRs in case the OSPF solution
fails.