Which router command will prevent router RTB from dropping a packet destined for the 10.1.3.0/24 network if a default route is configured?

Refer to the exhibit:

Subnet 10.1.3.0/24 is unknown to router RTB. Which router command will prevent router RTB from dropping a packet destined for the 10.1.3.0/24 network if a default route is configured?

A.
IP classless

B.
IP default-network

C.
Network 10.1.1.0

D.
Network 10.1.1.0 0.0.0.255 area 0