Refer to the above exhibit. Why is the 140.140.0.0 network not used as the gateway of last resort even though it is configured first?（）

A.The last default - network statement will always be preferred.

B.A route to the 140.140.0.0 network does not exist in the routing table.

C.Default - network selection will always prefer the statement with the lowest  IP address.

D.A router will load balance across multiple default - networks; repeatedly issuing the show ip route command would show the gateway of last resort changing between the two networks.