If IP routing is enabled, which two commands set the gateway of last resort to the default gateway?

If IP routing is enabled, which two commands set the gateway of last resort to the default gateway? (Choose two.)

A.
ip default-gateway 0.0.0.0

B.
ip route 172.16.2.1 0.0.0.0 0.0.0.0

C.
ip default-network 0.0.0.0

D.
ip default-route 0.0.0.0 0.0.0.0 172.16.2.1

E.
ip route 0.0.0.0 0.0.0.0 172.16.2.1