Which command can you enter to set the default route for all traffic to an interface?

Which command can you enter to set the default route for all traffic to an interface?

A.
router(config)#ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/1

B.
router(config)#ip route 0.0.0.0 255.255.255.255 GigabitEthernet0/1

C.
router(config-router)#default-information originate

D.
router(config-router)#default-information originate always